Killer Chocolate Cake
["1 c. unsifted unsweetened cocoa", "2 c. boiling water", "2 3/4 c. sifted all-purpose flour", "2 tsp. baking soda", "1/4 tsp. salt", "1/2 tsp. baking powder", "1 c. butter or butter blend, softened", "2 1/2 c. granulated sugar", "4 eggs, at room temperature", "1 1/2 tsp. vanilla"]
["Combine cocoa and boiling water, whisking until smooth.", "Cool completely.", "Sift together flour, soda, salt and baking powder."]
["cocoa", "boiling water", "flour", "baking soda", "salt", "baking powder", "butter", "sugar", "eggs", "vanilla"]