Place all dry ingredients in a mixer, then add wet ingredients one by one. Mix on medium for about 3-4 minutes until smooth and blended.
⅔ cups Sugar, 1 tsp. Apple Cider Vinegar, ½ tsp. Espresso baking powder, ¾ tsp. baking powder, ½ cup cocoa powder, 3/4 cup + 2 tsp. gluten free flour, 2 tsp. vanilla extract, ½ tsp. baking soda, ¼ tsp. salt, ¼ cup light brown sugar, 2 eggs, ½ cup vegatable oil, ⅔ cup boiling water