4 old fashioned chocolate layer Recipes

cake, unsalted butter (1 1/2 sticks), very soft, plus extra for greasing pans, unbleached all-purpose flour (8 3/4 oz), plus extra for dusting pans, unsweetened chocolate , coarsely chopped, dutch-processed cocoa (3/4 oz), water, sugar (12 1/4 oz), baking soda, table salt, buttermilk, vanilla extract, eggs, egg yolks, semisweet chocolate , finely chopped, unsalted butter (1 stick), sugar, corn syrup, vanilla extract, table salt, heavy cream (cold )

unsalted butter, very soft, all-purpose flour, unsweetened chocolate, dutch-processed cocoa powder, water, sugar, baking soda, salt, buttermilk, vanilla extract, eggs , plus, egg yolks, semisweet chocolate, finely chopped, unsalted butter, sugar, corn syrup, vanilla extract, table salt, heavy cream

all-purpose flour, superfine sugar, baking powder, baking soda, best-quality cocoa, soft unsalted butter, eggs, good-quality vanilla extract, sour cream, special equipment : 2 (each 8-inch diameter) layer tins with removable bases, buttered, good-quality semisweet chocolate, broken into small pieces, unsalted butter, sugar, light corn syrup, sour cream, good-quality vanilla extract, sugar flowers, to decorate , optional