Gluten-Free Buttermilk Pancakes

1 . Stage

Whisk together brown rice flour, all-purpose flour, buckwheat flour, sugar, baking powder, and baking soda in a bowl. Combine 3/4 cup buttermilk, egg yolks, and oil in a separate bowl; mix until combined. Add dry ingredients to buttermilk mixture; stir until just combined. Do not overmix batter.

2 . Stage

Beat egg whites in a glass, metal, or ceramic bowl until soft peaks form. Fold egg whites into the batter. Batter should have the consistency of tomato soup. If it is too thick, add remaining buttermilk little by little, waiting a bit to allow batter to set. (Gluten-free flours need time to absorb the liquid, thickening after about 45 seconds to 1 minute.)

3 . Stage

Heat a lightly oiled griddle over medium heat. Drop batter by 1/4-cupfuls onto the griddle. Cook until bubbles form and the tops are a bit dry, 3 to 4 minutes. Flip and cook until browned on the other side, 2 to 3 minutes. Repeat with remaining batter.

4 . Stage

Serve hot or wait until completely cooled before freezing.