Product review (5 stars): Love mine!
I love this and use it with my electric stove-I'd probably use it with gas too, but understand why some think the wood handle is dangerous. A heat diffuser makes it possible to keep tea in a ceramic pot warm for hours, or coffee in a French Press warm throughout the morning. You can use in on a burner to melt chocolate in a pot; it eliminates the need for a double boiler. It can be used to keep soup warm and even makes using terra cotta on your burners possible.

Perfect when you don't have a heavy bottomed pot and need something to keep your caramels, soup, stews, butter etc. from scorching.

Over time they turn dark and look well-seasoned. They come in a variety of styles, but I love mine with its wood handle.

They are inexpensive and indispensable.