What does foundation mean for cake?

In the context of baking, a foundation refers to the base layer of a cake, which typically consists of a mixture of ingredients like flour, sugar, eggs, baking powder, and sometimes liquid ingredients like milk or oil. It serves as the structural base upon which the rest of the cake is built. The foundation cake layer forms the structural support for any additional layers, frosting, or decorations that follow, ensuring that the cake holds its shape and stability. Properly prepared foundation layers ensure a consistent texture and provide the base flavor for the entire cake.