I can’t remember where and when I wrote about it; I think it was here – but since I forget, it does not count. The point, I recall (because I keep discovering a’fresh) is that there is a certain basic recipe for cake and once you understand it, everything is a matter of proportion of flour to milk and how you cook it. For example, a pan cake is a cake cooked in a pan. A waffle is a cake cooked in a waffle iron. A popover is a cake cooked in a cup. Now, we can argue whether lard or tallow or butter makes a popover a Yorkshire pudding, but the basics are: a quantity of flour, a quantity of eggs (for structure) some salt, some melted butter (or lard or tallow or even vegetable oil, and then something to make it foam a bit, maybe. If there is absolutely nothing to make it foam, I think maybe you have shortbread. If there’s baking powder, it’s a pancake or a waffle. If air is lofted into it with a whisk, it’s a popover or Yorkshire pudding. But once you understand how runny it should be, how fatty it should be, and how airy it should be, you can produce a tremendous amount of Europe’s greatest cuisine. Unless you get into millefeuille which is basically butter/bread damascus with no air in it… Anyhow.