Mix all ingredients except orange juice and set aside to rest while you heat your waffle iron. Once the waffle iron is hot, add the orange juice to the batter and stir.
Spray the iron lightly with canola oil (if you know your waffle iron is very non-stick, you can skip this step, but unfortunately most waffle irons do stick.) Follow manufacturer’s directions to make waffles. (Batter will be very thick; add more orange juice or water if you want a thinner batter.) You may need to spray the iron between waffles to avoid sticking.
Makes 4 servings, about 2 average-sized waffles per serving.