Combine the skim milk, egg yolk, oil and brown sugar in a bowl. Add the dry ingredients and mix it all together just until it is blended. You do not have to get rid of every tiny clump of flour.
Beat the egg white by hand or with a mixer until peaks form. Fold the beaten egg whites into the batter. Heat the oil in a skillet, pour in batter until you get the size pancakes you want. Fry the pancake until bubbles appear on the top side, then turn it and fry on the other side until it is a light brown.