I just realized today that I've been using 1 tbsp baking soda instead of baking powder, and they still have turned out wonderfully! (heynutritionlady.com)
Measure 2 tbsp baking soda into a 500 mL / 1 pint glass jar. (treehugger.com)
10 pieces of cooked bacon, crumbled 1.5 cups unsweetened cocoa powder 1.5 tsp salt 3 cups all purpose flour 1 tbsp baking soda 1.5 tsp baking powder 3 cups white sugar 3/4 cup vegetable oil 1.5 cups milk + 1 tbsp lemon juice 2 tsp vanilla 3 eggs 1.5 cups hot water (familyfoodandtravel.com)