Buttermilk Pancakes

I feel like it's a huge waste to buy pancake mix. I always have everything on hand except buttermilk.

2 cups flour
2 teaspoons baking powder
2 teaspoons sugar
1/2 teaspoon salt
2 cups buttermilk
1 egg
1 tablespoon oil

Mix dry ingredients, then add wet. Cover and refridge for at least an hour. Add more buttermilk to thin. Cook on medium high heat.