What is tomato fondant?

"Tomato fondant" is not a commonly recognized culinary term. It's possible you might be thinking of one of the following:

* Tomato confit: This involves slowly cooking tomatoes in oil or fat over low heat until they become soft and sweet. This is a common technique used to enhance the flavor of tomatoes and create a delicious topping for various dishes.

* Tomato jam: This is a sweet and savory spread made from tomatoes, sugar, and often spices like cinnamon or ginger. It's a great accompaniment to cheese, bread, or even meat.

* Tomato purée: This is a smooth, concentrated tomato sauce made by blending cooked tomatoes. It can be used as a base for soups, sauces, and other dishes.

If you can provide more context, I might be able to help you identify what you are looking for. For example, did you see a recipe for "tomato fondant"? What was the context?