In a large bowl, whisk together the dry ingredients. In another bowl whisk together the wet ingredients. Pour into the dry and gently mix until combined. Do not over-mix, some lumps are ok.
Heat your waffle iron up according to the manufacturer's directions. Once hot, spray with cooking spray or use a pastry brush to brush the grids with oil. Add batter to cover the grids, close and cook until crispy, about 3 - 5 minutes depending on your waffle iron. Remove and serve while crisp and hot. (You could hold in a 300°F oven, but the waffles will get a tad soggy.) Serve with your favorite syrups, jams, or fruits.
LindySez: If you don’t have buttermilk, you can emulate it by adding 1 tablespoon vinegar or lemon juice to 1 ¾ cup of milk, or mix ¾ cup yogurt to about 1 cup milk.