1. 1. Prepare Your Waffle Iron: Preheat your waffle iron according to the manufacturer’s instructions. Lightly grease it with cooking spray or a brush of oil, 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. Make sure there are no lumps and everything is well combined.

3. 3. Mix Wet Ingredients: In a separate medium bowl, whisk together the sourdough discard, large egg, milk, melted butter (or oil), and vanilla extract until smooth.

4. 4. Combine Wet and Dry: Pour the wet ingredient mixture into the dry ingredient mixture. Stir gently with a spatula or whisk 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: Ladle about 1/2 to 3/4 cup of batter (or the amount recommended by your waffle iron) onto the hot, greased waffle iron. Close the lid and cook for 4-6 minutes, or until the waffle is golden brown and crispy. Most waffle irons will stop steaming and/or have an indicator light when done.

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.