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Ilsa Heat Diffuser, Made in Italy from Cast Iron, Flame Guard for Simmering, 7-inches
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Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Purchase options and add-ons
Material | Cast Iron |
Color | Black |
Brand | Ilsa |
Product Dimensions | 7.25"L x 7.25"W x 3"Th |
Shape | Round |
About this item
- Ilsa’s Heat Diffuser creates a flat cooking surface, reduces and distributes heat evenly, eliminates hot spots in pans, and keeps foods from scorching
- Made in Italy from cast iron; removable stainless steel handle for compact for storage; measures 7-inches
- Easily eliminate unwanted hot spots and even the heating surface of both electric or gas burners; absorbs and diffuses heat evenly for greater energy efficiency
- Slow simmer sauces and other foods without them scorching or boiling over; helps balance smaller pots like butter warmers and espresso makers
- Durable and sturdy; longer handle keeps hands safely away from heat; wipe clean or hand wash in warm, soapy water and dry thoroughly
Additional Details


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Sustainability features
This product has sustainability features recognized by trusted certifications.Organic contentProduct contains at least 95% organic material.As certified byUSDA Organic is protected by law, inspected by experts, traced from farm to store, and shaped by public input. USDA develops and enforces the organic standards, which require products to be produced using farming practices that maintain and improve soil and water quality, minimize the use of synthetic materials, conserve biodiversity, and avoid genetic engineering, among other factors. Crops can be certified organic if they’re grown without prohibited substances such as most synthetic fertilizers and pesticides for three years prior to harvest. Livestock are raised on pasture and treated humanely without growth hormones or antibiotics. Organic products do not contain GMOs or artificial colors, flavors, or preservatives. Products that contain a minimum of 95 percent organic ingredients and use the USDA Organic seal are part of Climate Pledge Friendly. - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Organic contentProduct contains at least 95% organic material.As certified byUSDA Organic
USDA Organic is protected by law, inspected by experts, traced from farm to store, and shaped by public input. USDA develops and enforces the organic standards, which require products to be produced using farming practices that maintain and improve soil and water quality, minimize the use of synthetic materials, conserve biodiversity, and avoid genetic engineering, among other factors. Crops can be certified organic if they’re grown without prohibited substances such as most synthetic fertilizers and pesticides for three years prior to harvest. Livestock are raised on pasture and treated humanely without growth hormones or antibiotics. Organic products do not contain GMOs or artificial colors, flavors, or preservatives. Products that contain a minimum of 95 percent organic ingredients and use the USDA Organic seal are part of Climate Pledge Friendly. - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Organic contentProduct contains at least 95% organic material.As certified byUSDA Organic
USDA Organic is protected by law, inspected by experts, traced from farm to store, and shaped by public input. USDA develops and enforces the organic standards, which require products to be produced using farming practices that maintain and improve soil and water quality, minimize the use of synthetic materials, conserve biodiversity, and avoid genetic engineering, among other factors. Crops can be certified organic if they’re grown without prohibited substances such as most synthetic fertilizers and pesticides for three years prior to harvest. Livestock are raised on pasture and treated humanely without growth hormones or antibiotics. Organic products do not contain GMOs or artificial colors, flavors, or preservatives. Products that contain a minimum of 95 percent organic ingredients and use the USDA Organic seal are part of Climate Pledge Friendly. - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Organic contentProduct contains at least 95% organic material.As certified byUSDA Organic
USDA Organic is protected by law, inspected by experts, traced from farm to store, and shaped by public input. USDA develops and enforces the organic standards, which require products to be produced using farming practices that maintain and improve soil and water quality, minimize the use of synthetic materials, conserve biodiversity, and avoid genetic engineering, among other factors. Crops can be certified organic if they’re grown without prohibited substances such as most synthetic fertilizers and pesticides for three years prior to harvest. Livestock are raised on pasture and treated humanely without growth hormones or antibiotics. Organic products do not contain GMOs or artificial colors, flavors, or preservatives. Products that contain a minimum of 95 percent organic ingredients and use the USDA Organic seal are part of Climate Pledge Friendly. - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Organic contentProduct contains at least 95% organic material.As certified byUSDA Organic
USDA Organic is protected by law, inspected by experts, traced from farm to store, and shaped by public input. USDA develops and enforces the organic standards, which require products to be produced using farming practices that maintain and improve soil and water quality, minimize the use of synthetic materials, conserve biodiversity, and avoid genetic engineering, among other factors. Crops can be certified organic if they’re grown without prohibited substances such as most synthetic fertilizers and pesticides for three years prior to harvest. Livestock are raised on pasture and treated humanely without growth hormones or antibiotics. Organic products do not contain GMOs or artificial colors, flavors, or preservatives. Products that contain a minimum of 95 percent organic ingredients and use the USDA Organic seal are part of Climate Pledge Friendly. - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Organic contentProduct contains at least 95% organic material.As certified byUSDA Organic
USDA Organic is protected by law, inspected by experts, traced from farm to store, and shaped by public input. USDA develops and enforces the organic standards, which require products to be produced using farming practices that maintain and improve soil and water quality, minimize the use of synthetic materials, conserve biodiversity, and avoid genetic engineering, among other factors. Crops can be certified organic if they’re grown without prohibited substances such as most synthetic fertilizers and pesticides for three years prior to harvest. Livestock are raised on pasture and treated humanely without growth hormones or antibiotics. Organic products do not contain GMOs or artificial colors, flavors, or preservatives. Products that contain a minimum of 95 percent organic ingredients and use the USDA Organic seal are part of Climate Pledge Friendly.
Product information
Material | Cast Iron |
---|---|
Color | Black |
Brand | Ilsa |
Product Dimensions | 7.25"L x 7.25"W x 3"Th |
Shape | Round |
Product Care Instructions | Hand Wash Only |
Manufacturer | Harold Imports |
UPC | 759284147405 |
Global Trade Identification Number | 08000409001839 |
Item Weight | 14.1 ounces |
ASIN | B000I1WO8C |
Item model number | 255 |
Customer Reviews |
4.5 out of 5 stars |
Best Sellers Rank | #18,724 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #1 in Range Replacement Burner Rings |
Is Discontinued By Manufacturer | No |
Date First Available | June 20, 2008 |
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Ilsa Heat Diffuser, Made in Italy from Cast Iron, Flame Guard for Simmering, 7-inches
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Product Description
Ilsa’s Cast Iron Heat Diffuser reduces heat from burners on both electric and gas stovetops to distribute it evenly and eliminate hot spots in pans so foods won’t scorch. It quickly creates a flat cooking surface to balance smaller pots, like butter warmers and espresso makers, and keeps pan handles from getting hot. It’s perfect for simmering sauces and other foods slowly without them scorching or boiling over. Made in Italy from cast iron with a stainless steel handle, Ilsa’s Heat Diffuser absorbs and diffuses heat evenly for better energy efficiency. Durable and sturdy, its longer handle keeps hands safely away from heat and is easily removed for compact storage. Measures 7-inches in diameter. Wipe clean or hand wash in warm, soapy water and dry thoroughly.
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Price | $22.93$22.93 | $27.99$27.99 | $15.69$15.69 | $28.90$28.90 | $37.99$37.99 |
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Customer Ratings | |||||
Sold By | Cooking on Mars | Sewring | Easimgo | Cooks Innovations | Hour Loop |
size | Heat Reducer | — | — | 1 | 8 1/4in |
material | Cast Iron | Aluminum | Cast Iron | Steel | Cast Iron |
unit count | 1 | 3 | 1 | 1 | 1 |
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the heat diffuser works well on gas stoves, evenly distributing heat and preventing hot spots. The solid cast iron construction and porcelain finish on one side make it durable and attractive, while its size accommodates smaller pots and espresso makers perfectly. They appreciate its effectiveness for simmering sauces and cooking soups, and consider it worth the price.
AI-generated from the text of customer reviews
Customers find that the heat diffuser works well, particularly on gas stoves, with one customer noting its effectiveness with Visions cookware and another mentioning its compatibility with propane and gas flame burners.
"...Ilsa 7-Inch Cast Iron Heat Diffuser appears to work very well...." Read more
"Works great on my gas stove, both in distributing the heat and limiting it when I want a lower simmer than was possible without this device...." Read more
"...butter this last weekend, and I'm happy to say that my diffusers worked like a charm!..." Read more
"...diffuser to any others because it's my first but for us, this one has worked great...." Read more
Customers appreciate the trivet's heat distribution, noting that it evenly disperses heat, prevents hot spots, and heats up quickly.
"...to use, based on its location on the cooktop, is the second most powerful burner, but now we can use it without worries of over heating the pan...." Read more
"Works great on my gas stove, both in distributing the heat and limiting it when I want a lower simmer than was possible without this device...." Read more
"...It heats up perfectly and evenly and I'm using these diffusers to protect my vintage Pyrex Flameware, which is glass and needs very even heating...." Read more
"...It simmered nicely an entire day, and I only had to stir it 4-5 times. I've also used it to cook down tomato sauce from our garden tomatoes...." Read more
Customers praise the heat diffuser's construction, describing it as a solid cast iron item with beefy material and a finish that doesn't crack or break.
"...these are made of cast iron, so, they are a good investment, will last forever, and this size fits the small burners on an electric stove..." Read more
"...cast iron cookware (and now I'm a fan of this diffuser) - it lasts for generations, it becomes non-stick after seasoning with oil, it doesn't warp..." Read more
"Great Item! It was exactly what I needed, it fits the stove nicely and because of its shape the small pots are secure. I am buying more for my family." Read more
"It is very nicely made and finished, small enough in the center that it will work with almost any small cookware or coffee maker...." Read more
Customers like the trivet's size, as it fits perfectly on gas stovetops and accommodates smaller pots and espresso makers, with one customer noting it's small enough to leave on the burner.
"...use two adjacent burners simultaneously, so the 7 inch model is the perfect size for our range...." Read more
"...Placed it on my stove and voilà, no more tipped coffee maker. Fit was perfect and I hardly notice it. Almost looks like it belongs too...." Read more
"...investment, will last forever, and this size fits the small burners on an electric stove perfectly...." Read more
"...This diffuser worked very well apart from the fact that it only fits one of my burners (at the far back of the stove -- of course)...." Read more
Customers find the trivet effective for simmering sauces and appreciate its even heat distribution. One customer mentions it works well with clay cookware, while another notes it transforms a propane stove into a gourmet cooking surface.
"...The risk/reward ratio is very favorable -- big reward (utility, better cooked food, etc.) for very little risk (the $15)." Read more
"...It worked just as well as before - the sauce simmered gently without splashing all over the stove or scorching on the bottom...." Read more
"...Anyhow, this find allowed me to love our new stove now. The oven is great but I really thought the stove was never going to work out...." Read more
"My Lacanche gas stove burners are a bit high. This gadget allows me to “ simmer” foods on the stove top. Would love a larger one for my large burner." Read more
Customers appreciate the trivet's appearance, noting its nice porcelain finish on one side, shiny black surface, and how it matches cast iron grills.
"...The product is solid and seems to have an enamel coating on the top. Underneath you can see the cast iron and it does not have the same coating...." Read more
"...Classic black enamel finish looks great on any stove top...." Read more
"...It fits my Thermador stove top perfectly. And it looks adorable! I love aesthetics as much as I require functionality...." Read more
"...It is made of enameled cast iron so it looks great while maintaining the kind of even heat cast iron is famous for...." Read more
Customers find the heat diffuser works well on gas stoves, particularly for small pots and espresso makers.
"...It heats up quickly and evenly, and makes it possible to use a small Turkish coffee pot on the stove." Read more
"...This nests perfectly inside my stainless steel MSR Alpine frying pan and the MSR Alpine 1.5L pot nests perfectly in that...." Read more
"...reduces the gas flame to a smaller diameter making it possible to use a smaller cooking vessel...." Read more
"...with rust or flaking/bubbling paint and it is the perfect solution to my gas stove where the lowest setting is no where near low enough AND where..." Read more
Customers find the trivet to be worth its price, describing it as high-end, with one customer noting it's a cheap solution for even stove top heating.
"...The risk/reward ratio is very favorable -- big reward (utility, better cooked food, etc.) for very little risk (the $15)." Read more
"...I imagine it might not fit everyone’s stove but it was worth the chance and fit my Frigidaire perfectly. Side note...." Read more
"...Essentially -- it is useless. I'm guessing you need to size up to the 8.5 inch one -- but that will produce an overhang...." Read more
"I really love that these are made of cast iron, so, they are a good investment, will last forever, and this size fits the small burners on an..." Read more
Reviews with images

Solid Cast Iron Made in Italy, But Be Careful When Using!
Top reviews from the United States
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- Reviewed in the United States on July 21, 2016Size: Heat ReducerVerified PurchaseThe Ilsa 7-Inch Cast Iron Heat Diffuser appears to work very well. I ordered two, based on other reviews, and they arrived today in time to use in cooking two meals. I love the convenience of not needing to worry about food burning and sticking and not having to "fine tune" the flame height. Also, the burner most convenient to use, based on its location on the cooktop, is the second most powerful burner, but now we can use it without worries of over heating the pan.
When searching for this item on Amazon I couldn't remember exactly what it was called. Since we had a Dacor "dual fuel" stove in our previous house (electric oven, gas cooktop) and had the Dacor plate that came with the oven, I went to the Dacor web site where I was reminded it is called a simmer plate. I was amazed that Dacor wants about $85 for a simmer plate when the Ilsa is $15. Although the Dacor simmer plate was probably 8 inches and the Ilsa is 7 inches, the main difference is in heft. The Dacor plate is much heavier. But not $70 heavier!
The 7 inch Ilsa simmer plate is much better for us than a larger size, due to the configuration of our gas range. It is a 5-burner with two medium sized burners on the left side, a large burner in the center, a medium large burner at the lower right and a small burner at the upper left. If we had gotten a larger diameter it would not have allowed us to use two adjacent burners simultaneously, so the 7 inch model is the perfect size for our range.
Even though I've only used the simmer plates twice, I am already very pleased with it. Since they are new, for me durability is still an open question, but I would guess that they will last plenty long enough. (I eventually had to wire brush the $85 Dacor simmer plate and repaint it, so that sort of thing is probably inevitable with any similarly constructed simmer plate.) Out of the box, the Ilsa simmer plate is great.
I think if you put the correct side up (the side with the little "feet") the chance of it blistering as shown in another review would be near zero. Also, I would never put the burner on the highest setting when using a simmer plate. If you need that much heat to start with then start without using the simmer plate and when you are ready to turn the heat down then slip the simmer plate under the pot.
So, yes, I highly recommend this simmer plate. The risk/reward ratio is very favorable -- big reward (utility, better cooked food, etc.) for very little risk (the $15).
- Reviewed in the United States on March 24, 2025Size: Heat ReducerVerified PurchaseWorks great on my gas stove, both in distributing the heat and limiting it when I want a lower simmer than was possible without this device.
It's good the handles are detachable. You'll want to remove them during use and put them in only when moving a hot device.
- Reviewed in the United States on April 8, 2025Size: Gas Ring ReducerVerified PurchaseFor those of us that have gas stoves, some of the grates can be a challenge for certain items. For me, the challenge was using my stove top Italian espresso maker. If I didn’t place it just right, it would tip over. Annoying to say the least.
Stumbled across this listing and ordered it. Placed it on my stove and voilà, no more tipped coffee maker. Fit was perfect and I hardly notice it. Almost looks like it belongs too. I imagine it might not fit everyone’s stove but it was worth the chance and fit my Frigidaire perfectly.
Side note. I did purchase one for my friend as surprise and it didn’t work out. It did fit but it wasn’t enough size to cover her needed pan. Imagine everyone’s needs can vary.
- Reviewed in the United States on October 7, 2013Size: Heat ReducerVerified PurchaseI really love that these are made of cast iron, so, they are a good investment, will last forever, and this size fits the small burners on an electric stove perfectly.
I would REALLY like to give this lovely Italian company 5 stars, but I had to take one star off because the black coating that is on one side slowly chips off on higher heat.
This is only an aesthetic issue, since it has no effect on the function. It heats up perfectly and evenly and I'm using these diffusers to protect my vintage Pyrex Flameware, which is glass and needs very even heating. It's serving its purpose very well.
So, my only wish is that this cast iron burner had NO coating at all.
They did this to give it a black glossy finish on one side, which is very pretty, but it wasn't necessary, especially since it will not last using higher heat.
Nonetheless, I do not believe you will regret your purchase...they do exactly what they are supposed to do and will last forever.
Also, if you have chemical sensitivity, this is a VERY good purchase, as I did not smell any off-gassing of chemicals when I first began using these, and I am VERY sensitive to these things.
Top reviews from other countries
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LoorahReviewed in France on August 13, 2018
5.0 out of 5 stars J’adore
Size: Heat ReducerVerified PurchaseJe ne connaissais pas du tout ce produit. Puis j’en ai entendu parler lors ce que j’ai voulu faire l’acquisition d’un tajine en terre cuite. Si au début j’ai acheté ce produit uniquement pour l’utiliser avec mon tajine je me suis très vite rendu compte qu’il pouvait aussi me servir avec mes casseroles, poêles et wok que j’utilisais habituellement
Pas trop lourd mais tout de même juste ce qu’il faut pour rester en place sur le feu, il ne bougera pas. 18 cm c’est parfait même pour un feu de grande taille sur une gazinière standard. Pas besoin que le diffuseur fasse la taille de votre poêle
J’ai vraiment adoré la poignée amovible ! C’est Tip top ! Vous mettez votre diffuseur en place et vous retirer la poignée vous poser ensuite votre casserole ( ou autre ). C’est super discret et on ne sait même pas qu’il y a un diffuseur. Il n’y a pas de poignée disgracieuse voir même dangereuse qui dépasse
Le revêtement supérieur et brillant, c’est très pratique pour le nettoyer avec un peu d’eau chaude et de produits vaisselle. Ça ne fait pas de taches de gras
Franchement j’en suis ultra satisfaite. Je l’ai utilisé plusieurs fois et il tient très bien. Je constate vraiment que ma cuisson est beaucoup plus douce. Très pratique pour faire revenir doucement des choses dans une poêle sur une gazinière où la cuisson est parfois un peu trop vive
Si vous avez apprécié mon commentaire, si celui-ci vous a été utile, faites-le-moi savoir en cliquant ci-dessous
LoorahJ’adore
Reviewed in France on August 13, 2018
Pas trop lourd mais tout de même juste ce qu’il faut pour rester en place sur le feu, il ne bougera pas. 18 cm c’est parfait même pour un feu de grande taille sur une gazinière standard. Pas besoin que le diffuseur fasse la taille de votre poêle
J’ai vraiment adoré la poignée amovible ! C’est Tip top ! Vous mettez votre diffuseur en place et vous retirer la poignée vous poser ensuite votre casserole ( ou autre ). C’est super discret et on ne sait même pas qu’il y a un diffuseur. Il n’y a pas de poignée disgracieuse voir même dangereuse qui dépasse
Le revêtement supérieur et brillant, c’est très pratique pour le nettoyer avec un peu d’eau chaude et de produits vaisselle. Ça ne fait pas de taches de gras
Franchement j’en suis ultra satisfaite. Je l’ai utilisé plusieurs fois et il tient très bien. Je constate vraiment que ma cuisson est beaucoup plus douce. Très pratique pour faire revenir doucement des choses dans une poêle sur une gazinière où la cuisson est parfois un peu trop vive
Si vous avez apprécié mon commentaire, si celui-ci vous a été utile, faites-le-moi savoir en cliquant ci-dessous
Images in this review
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YokoReviewed in Japan on June 2, 2013
5.0 out of 5 stars 安定します
Size: Heat ReducerVerified Purchaseマキネッタや炊飯の時に使っています。取っ手は簡単に外せます。重くて安定していること、汚れが付きにくく、付いてもすぐに落とせることが気に入っています。
- ElReviewed in the United Arab Emirates on August 27, 2023
5.0 out of 5 stars perfect
Size: Gas Ring ReducerVerified Purchaseperfect for the moca coffee pot, not slippery. solid cast iron.
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Miguel Ángel (Alicante)Reviewed in Spain on July 7, 2022
5.0 out of 5 stars Ahora puedo hacer arroces
Size: Heat ReducerVerified PurchaseMuy buena solución para fuego de gas pequeños que no alcanzan a toda la extensión de las paelleras. En mi caso, ahora puedo utilizar una paella para 5 raciones y el arroz queda igual de hecho en cualquier punto de la misma, pues la placa reparte perfectamente el calor. Lástima que no haya un modelo un poco más grande.
Si se quiere limpiar, siempre en frío
- Jim InghamReviewed in India on September 23, 2017
5.0 out of 5 stars WORTH IT'S WEIGHT IN IRON!!!
Size: Heat ReducerVerified PurchaseThis is a wonderful heat diffuser.
No more burnt pans.
No more having to stir them every two minutes!
Little bit expensive with the import duties but worth every rupee!
I shall buy one more!