Before you begin: Pull your sourdough discard, eggs, and milk out of the fridge 30 minutes before mixing so they're not ice-cold.
Preheat your skillet on medium-low heat for 15 minutes (surface temp around 300º F).
Combine all ingredients in one bowl and mix until just combined. It will be lumpy and that's ok. Don't over-mix.
Melt 1 teaspoon of butter in the hot skillet.
Pour about ½ cup of batter into the skillet for each pancake. Cook for 5 minutes or until the edges look dry, holes have formed and stayed open on top, and the bottom releases cleanly from the pan.
Flip the pancake and cook for another 3 minutes. Only flip ONCE.
Serve immediately with more butter and your favorite topping.
