I’m with @fre - that third cake is baked mousse au chocolat!
My grandmother’s chocolate cake is the best chocolate cake, because it works plain as a snack cake, with whipped cream and berries, or frosted and filled for birthdays. Shortly before she died, she finally shared her secret recipe. It’s on the back of the Hershey’s cocoa can. It has a weird technique in it; after making a fairly straightforward cake batter, you add a cup of boiling water. Somehow, the resultant watery batter bakes up surprisingly dense, rich, and ■■■■■. (It’s a valid word for cake descriptions, right?)
