Grandma's Buttermilk Hotcakes

1 c. flour
1 tsp. sugar
3/4 tsp. baking powder
3/4 tsp. baking soda
1 c. buttermilk
2 Tbsp. oil
1 egg

Egg replacement: 1 Tbsp. gemahlene Leinsaat + 3 Tbsp. Wasser

Buttermilk replacement:  1 Tbsp. Essig or Zitronensaft and milk to make a cup; or yogurt (batter will be very thick)