A basic sweet waffle batter consists of plain flour, salt, baking powder (and sometimes baking soda (bicarbonate of soda)), sugar, eggs, milk, and often melted butter and oil. Savoury waffle batter may contain herbs, spices or grated cheese. Some waffles contain yeast or buttermilk for a fluffier end result.
Top tip: As any baker will tell you, always, always, always sift your dry ingredients to get rid of any clumps.