Whisk all the ingredients in a large bowl, taking care that the baking powder is evenly distributed throughout. Spoon or pour the whole kit-and-caboodle into a large container and seal tightly. Store up to 3 months in a dark, cool pantry. To make 3 waffles, scoop 1 cup plus 3 Tbs. of the mix into a bowl. Whisk in the egg, milk, vanilla extract, and oil or butter. Mix well and set aside for 10 minutes while the waffle iron heats. Then make the waffles in the iron according to the manufacturer’s instructions.
