Oil the waffle maker. Place a triangle mold (or you can make your own, using aluminum foil, alternatively, you can also make regular square waffles and then cut them on the diagonal into triangles though they will be wider triangles) and pour around 1/4 cup batter into the mold. It will spill out a little but you can clean the edges up after. Cook in the waffle iron according to your waffle iron instructions, around 5-7 minutes, until golden.