4 sour cream cake chocolate rum frosting Recipes

strong coffee, unsweetened chocolate, chopped, dark rum or 1/2 cup kahlua, sour cream, fresh baking soda, salt, unsalted butter, softened, granulated sugar, eggs, all-purpose flour, icing sugar, cocoa powder, unsalted butter, softened, dark rum or 3 tbsp kahlua, sour cream or 1 -2 tbsp milk

strong coffee, unsweetened chocolate, chopped, dark rum or 1/3 cup kahlua, sour cream, baking soda, salt, butter, softened, granulated sugar, eggs, all-purpose flour, icing sugar, cocoa powder, butter, softened, dark rum or 3 tbsp kahlua, sour cream or 1 -2 tbsp milk

all-purpose flour, good cocoa powder, baking soda, kosher salt, unsalted butter, at room temperature, granulated sugar, light brown sugar , packed, extra-large eggs, at room temperature, pure vanilla extract, buttermilk, at room temperature, sour cream, at room temperature, brewed coffee, chocolate buttercream frosting , recipe follows, bittersweet chocolate, semisweet chocolate, egg whites (4-5 extra-large eggs), at room temperature, granulated sugar, cream of tartar, kosher salt, unsalted butter, at room temperature, pure vanilla extract, instant espresso powder , dissolved in 1 1/2 tsp water, dark rum , optional