Sour Cream Pancakes

2 eggs, separated
1 1/2 cups buttermilk
1/2 cup sour cream
1/4 cup butter, melted (I didn't use this when I made them.)
1 cup all-purpose flour
1/4 tsp baking soda
1/2 tsp salt

In a large bowl, mix together the yolks, milk and sour cream until well blended. Add the butter and just stir until it's combined.
In a separate bowl, sift together the flour, baking soda and salt. Add it to the yolk/milk mixture and beat until smooth.
Beat the egg whites until they're stiff but still moist. Gently fold the yolks into the batter.