Cake:2 cups white sugar1 3/4 cup all purpose flour1 cup unsweetened, Dutch process cocoa powder (I used Hershey Special Dark)1 1/2 tsp baking powder1 1/2 tsp baking soda1 teaspoon salt2 eggs1 cup milk1/2 cup vegetable oil2 tsp vanilla extract3/4 cup
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Frosting:2 sticks (1 cup) salted butter, slightly softened1/3 cup heavy cream2 tsp mint extract1 tsp vanilla extractDrop or two of green food coloring4 cups powdered sugar2 oz semisweet chocolate, finely chopped