Mix plain flour, rice flour, egg white, pinch of salt and water in a mixing bowl until it forms a smooth, thin batter.
Heat frypan over medium-low fire and grease with butter or oil. Ladle 1/5 of the batter into pan and swirl it around quickly to form a thin crepe
Cook crepe till underside is dry then flip crepe over. Cook the other side till dry and remove. Repeat for the rest of the batter.
Spread some red bean paste (about 40g or more if you prefer) onto each crepe in a thin rectangular shape and fold the sides in. Seal crepe with egg white or fresh batter if needed.
Deep fry red bean pancakes in a deeper pan. Press pancake down or baste with hot oil during deep frying process to ensure even browning. Remove pancake when browned.
Cut red bean pancake into smaller rectangles or squares. Let red bean pancake cool before serving.