Preheat oven to 350º. Butter 2 - 9"x5" loaf pans.I sprayed mine with bakers joy . Or you can use a 10" Bundt pan. Will have to bake longer in bundt pan.
In a bowl, gradually whisk milk into cocoa powder till smooth. Whisk in yogurt. Set aside.
In another bowl , combine dry ingredients. In a large mixing bowl. Beat butter and sugar until light and fluffy. Beat in eggs and vanilla extract. . Add flour alternating with milk mixture. Making 3 additions of flour and 2 of milk mixture. Fold in chocolate chips.
Spread into prepared pans. Smoothing top Bake 60-70 minutes or until toothpick comes out clean.
Let cool on a rack 15 minutes. Invert . Remove from pan.cool completely. Store in airtight container. You can also freeze them . ( I made 3 loaf pans - 8" and used mini chocolate chips ).
