10 oz bran flakes
1 qt buttermilk
5 cups flour
4 eggs
3 cups sugar
1 cup vegetable oil
3 tsp baking soda
2 tsp salt

mix all ingredients and store in the refrigerator. the mix gets better with age, so just use what you need for that day. pour 1/3 batter into muffin tins and bake at 400 degrees for 10-20 minutes. you may add nuts or fruit to the mix before baking.