Chocolate Cupcakes

3/4 cup boiling water 3/4 cup cocoa powder 6 ounces butter 2 cups sugar 1 teaspoon fine salt 1 teaspoon vanilla extract 3 eggs 2 1/2 cups cake flour 1[...]

3/4 cup unsweetened cocoa powder 1 1/2 cups all-purpose flour 1 1/2 cups sugar 1 1/2 teaspoons baking soda 3/4 teaspoon baking powder 3/4 teaspoon salt 2[...]

1 1/2 cups flour 1 cup unsweetened cocoa 1 1/4 teaspoons baking soda 1 1/4 teaspoons baking powder 1 teaspoon salt 2 cups sugar 3/4 cup hot water 3/4 cup milk[...]