There was some talk about the cake Charlotte bakes for Griffith in episode 258, so I figured I'd make a quick thread about it. It's a traditional type of cake from Europe that's commonly known as Baumkuchen, which means "tree cake" in German. It's called like that because it has layers that look a bit like the rings inside a tree trunk. The main ingredients are butter, eggs, sugar, vanilla, salt and flour.
What makes this cake unique is that it's traditionally cooked on a spit. The baker slowly adds layers of batter while rotating the cake over the fire, which is how it achieves its look. It's a slow process since there can be up to two dozen layers, and it requires some real skill. In fact it's almost exclusively made by confectioners nowadays and it's not a very common pastry.
There are several types of spit cakes like this in various European countries, typically in mountainous regions. Austria, Czech Republic, Denmark, France, Hungary, Poland, Sweden... They each have their own names and styles for it. It's not clear where or when these kinds of cakes first originated, but the reason we use the German name Baumkuchen here is because that's how it's called in Japan: バウムクーヘン.
It was introduced there in 1919 by Karl Juchheim and has since become very popular, more so in fact than it is in Europe. This is no doubt how Miura got the idea to feature it in Berserk!