Beat egg yolks, mix in buttermilk and 60g butter. Sift dry ingredients (can add sugar and salt to taste - I do) and fold in to mixture. At this point it''s good to rest in the fridge for 1/2hr. Whisk egg whites to soft peaks, fold in to batter. Lightly grease heavy-based pan with the extra butter, ladle 1/4c batter. Cook until batter bubbles through from the underneath, then flip for 30s. Keep warm as you do the rest.