In a large bowl, whisk together flour, sugar, baking powder, baking soda, and salt.
1 cup all-purpose flour, 1 tablespoon granulated sugar, 1 teaspoon baking powder, 1/2 teaspoon baking soda, 1/4 teaspoon fine sea salt
In another bowl, stir together the sourdough discard, milk, egg, and melted butter until smooth.
1 cup sourdough discard, 3/4 cup milk, 1 large egg, 2 tablespoons unsalted butter
Add the wet ingredients to the dry ingredients and stir to mix but do not beat vigorously. The flour should be fully incorporated, but the batter should be a bit lumpy, not smooth.
Heat a skillet or griddle over medium (350°F). If needed, lightly coat with butter or nonstick spray.
Butter or nonstick spray
Use a 1/4 cup scoop to portion out pancake batter, making sure to not crowd the cooking surface so it's easy to flip the pancakes. Cook until bubbles form and pop on the surface and the edges start to dry (2-3 minutes). Flip and cook until golden brown, another 1-2 minutes.
Place cooked pancakes on a plate and keep warm in a microwave or very low oven, and continue cooking until all the batter is used. Enjoy hot with your favorite pancake toppings!