I love the WBH mocha chip ("freckled mocha") cake, too, and the orange one! I haven't tried the white so I'm going to have to give it a shot. Here's my favorite white cake and it is awesome . . . it's a recipe from King Arthur's Flour. This cake is awesome as it is, or I love substituting 1 cup of brewed chai tea (room temp.) for the 1 cup of milk to make a chai tea flavored cake. The spices in the chai make such an amazing cake!
King Arthur White Cake
8 tablespoons (1 stick, 4 oz.) butter, softened
1/2 cup (3-1/4 oz.) vegetable shortening
1 tablespoons (1/2 oz.) baking powder
1-3/4 cups (12-1/4 ounces) sugar
3/4 teaspoon salt
2 teaspoons vanilla extract
1 teaspoon almond extract
-- Cream together until light. 5 min. or more.
5 large egg whites (6 to 7 oz.)
-- Add egg whites one at a time and beat well after
2-3/4 cups (11 oz.) cake flour
1 cup (8 oz.) milk
-- Stir in flour and milk, alternating between the
two, starting and ending with the flour. (i.e. 1/3
flour, 1/2 milk, 1/3 flour, 1/2 milk, 1/3 flour)
-- Bake at 350. 25-35 minutes or until done.