a time, then vanilla.
1. Alternate adding flour mixture and milk in three additions, starting and ending with flour.
1. Transfer one-third of batter to another bowl. Mix cocoa powder with hot water, then fold into this portion along with melted chocolate chips.
1. Spoon batters alternately into pan. Swirl with a knife for marble effect.
1. Bake 70-80 minutes until a toothpick comes out clean.
1. Cool in pan 15 minutes, then invert onto wire rack to cool completely.
