To prepare a raspberry ricotta cake with white chocolate and almonds recipe, first you need to prepare the cake batter. First, you will need the following ingredients: 1 cup (240 ml) of sour cream, 2 tablespoons of sugar, 1 tablespoon of vanilla extract, and 1 teaspoon of salt. In another bowl, combine the flour, cocoa, baking powder, salt and baking soda. Add the dry ingredients to the wet ingredients and mix until just combined. Pour the batter into the prepared cake pan and bake in the oven for 35 to 40 minutes, or until the toothpick comes out clean.