This document provides a recipe for cooking a cake. It lists the ingredients as 200 grams of butter, 2 cups of sugar, 3 cups of flour, 1/4 cup of vanilla, 4 eggs, and 4 spoonfuls of milk. The preparation instructions are to first melt the butter and mix it with the sugar, then add the eggs and mix in the flour, vanilla and milk. Finally, the mixture is poured into a pan and cooked for 30 minutes. The recipe was contributed by Julieta Lopez, Jesica Luna, Candela Cabral, and Esteban Medina.