Sourdough buttermilk waffles

Preparation

• Overnight sponge: mix the ingredients and let sit for a night in the kitchen.
• The batter :
  In the morning , mix the batter -must be thicker than sour cream (you can make pancakes if you prefer).
• Mix the batter into overnight sponge. Spoon it into a hot waffle iron.thick batter.
• If you would like to use up more sourdough starter , use for the sponge (B).