An 8 inch round flan foil is a type of kitchen tool used to make and bake flan, a type of dessert that is similar to a custard. The foil is typically made of a lightweight, aluminum material and is used to mold and shape the flan mixture before baking. The round shape and 8-inch diameter of the foil is designed to fit a standard size flan dish and it has a little lip around the edge to hold the flan mixture in. This size is perfect for making small flans for personal servings or small gatherings.