Mix together sourdough starter, egg, sugar, oil and baking soda.
Add milk, coconut milk, or water to thin the batter to a pancake batter consistency. Begin with 2 tablespoons liquid and add more as needed, based on the consistency of your sourdough starter.
Heat a griddle over medium heat. Melt a slice of butter or coconut oil on the griddle. Once the griddle is hot, add ¼ cup of batter for each pancake. Cook until golden brown; flip and cook the other side.
For more Sourdough Pancake Recipes, check out our complete list, including gluten-free sourdough pancakes and other sourdough breakfast recipes.