1. 1. Prepare your waffle iron: Preheat your waffle iron according to the manufacturer’s instructions. Lightly grease it with melted butter or cooking spray, even if it’s non-stick, to ensure extra crispiness and prevent sticking.

2. 2. Combine dry ingredients: In a large mixing bowl, whisk together the all-purpose flour, granulated sugar, baking powder, baking soda, and salt until well combined and there are no lumps. This ensures even distribution of the leavening agents.

3. 3. Mix wet ingredients: In a separate medium bowl, whisk together the sourdough discard, milk, melted butter, egg, and vanilla extract until smooth. Make sure the butter isn’t too hot, or it might scramble the egg.

4. 4. Combine wet and dry mixtures: Pour the wet ingredient mixture into the dry ingredient bowl. Stir gently with a whisk or spatula until just combined. It’s okay if there are a few small lumps; overmixing can lead to tough waffles. The batter should be thick but pourable.

5. 5. Cook the waffles: Pour or ladle the batter onto the preheated and greased waffle iron. Use enough batter to cover the grids without overflowing (this amount will vary based on your waffle iron size). Close the lid and cook for 3-5 minutes, or until the steam stops, the waffle is golden brown, and crispy to your liking.

6. 6. Remove and serve: Carefully remove the cooked waffle from the iron using a fork or tongs. Place it on a wire rack to prevent it from getting soggy while you cook the remaining batter. Serve immediately with your favorite toppings.