Egg White Waffles

Ingredients

• • 2 cups (300 g) unbleached all-purpose flour
  • 6 tbsp (50 g) icing sugar
  • 1 tsp baking powder
  • ½ tsp baking soda
  • ½ tsp salt
  • 1 ½ cups (375 ml) buttermilk (see note)
  • ¼ cup (60 ml) canola oil
  • 4 egg whites