-
Preheat the oven to 350°F. Line two standard 12-cup muffin pans with paper or silicone muffin cups, and grease the cups.
-
In a large mixing bowl, whisk together the cocoa, flour, sugar, baking powder, baking soda, salt and chocolate chips. Set aside.
-
In a large measuring cup or medium-sized mixing bowl, whisk together the eggs, milk, vanilla, oil, and vinegar. Stir this mixture into the dry ingredients, mixing until everything is well combined.
-
Spoon the batter into the prepared muffin pans, filling the cups about 3/4 full.
-
Bake the cupcakes for 20 to 22 minutes, or until a cake tester or toothpick inserted in the center of one of the middle cupcakes comes out clean.
-
Remove the cupcakes from the oven, and as soon as you can handle them, remove them from the pan, and transfer to a rack to cool. Store cooled cupcakes airtight.