Product review (4 stars): Great heat diffuser if you know how to use it
First you need to burn off the oil covering the metal, it will smoke and have an odor but its ok. After its no longer shiny and bluish black it ready to be used. This is to be used on low heat for a simmer. The handle will blacken a bit, but remember don't put in on high heat or it might burst into flames. You put this under the pot during the middle to end of cooking, not at the beginning.