In a medium sized glass or ceramic mixing bowl combine all wet ingredients, eggs, milk, butter, vanilla and beat with a whisk or a fork until well combined. Stir in the starter.
In a separate medium glass or ceramic mixing bowl combine all the dry ingredients. Mix together with a whisk or a fork.
Make a small well in the center of the dry ingredients and pour in the wet egg mixture. Stir just to combine.
Let batter sit 5-10 minutes. Meanwhile heat a griddle or non stick pan to medium heat. Melt a combination of butter and oil in the pan.
When the butter sizzles, pour 1/3 cup batter per pancake onto the griddle. Cook over medium low heat about 3-4 minutes until small bubbles begin to form. Flip and cook until golden brown.