The unexpected ingredients in this recipe are the mayonnaise and the instant coffee, both of which help to make the cupcakes extra moist and chocolate-y. This recipe is like an old-fashioned mayonnaise cake, and is one that I have made many times because it is so good. I have used it for sheet cakes, as in
Shirl's Brooklyn Blackout Cake, for vintage layer cakes, and for these cupcakes. You just can't go wrong with this recipe.
Recipe adapted from the " Bouchon Bakery" Cookbook by Thomas Keller with Sebastien Rouxel (2012). .