Blend flour, sugar, baking powder, baking soda, and salt together in a bowl. Add the kefir, oil, and eggs and whisk everything together until well combined. Lumps are fine – do not overbeat.
Keep the blueberries frozen until the pan is hot and add to the batter just before you’re ready to pour it in the pan. This helps maintain their bright color and form in the pancake.
Heat a large non-stick skillet on medium-low. Wait until the pan is warm and add a tablespoon of oil to the skillet. Ladle ⅓ cup of batter into the skillet.
Flip pancakes once bubbles rise to the surface and the bottoms are golden brown, after about 2-4 minutes. Adjust heat if necessary. Cook until both sides are lightly browned.
Adapted from New York Times Cooking’s Perfect Buttermilk Pancakes recipe
The “kid pile” is a common sight in the barn nursery, as they curl up with with each other for companionship and warmth.