01 - In a large mixing bowl, whisk together the sourdough discard, milk, eggs, melted butter, and vanilla until smooth.
02 - In a separate bowl, combine the flour, sugar, baking powder, baking soda, and salt.
03 - Add the dry ingredients to the wet mixture and gently fold until just combined. Do not overmix; a few lumps are fine.
04 - Heat a nonstick skillet or griddle over medium heat and lightly grease with butter or oil.
05 - Pour ¼ cup of batter per pancake onto the skillet. Cook until bubbles form on the surface and the edges look set, about 2–3 minutes.
06 - Flip and cook for another 1–2 minutes, until golden brown and cooked through.
07 - Repeat with the remaining batter, greasing the pan as needed.
08 - Serve warm with maple syrup, fresh fruit, or your favorite toppings.