Step 1: 1. In a large vessel smash butter with your hand palm and make it smooth.
Step 2: 2. Slowly keep adding powdered sugar and keep on mixing with your palm.
Step 3: 3. Once the sugar is completed melted, start adding the egg white mixture (egg white should be first whisked properly and the egg yolk should be discarded).
Step 4: 4. Add flour (maida), little at a time and keep on mixing with your palm.
Step 5: 5. Add baking powder and mix well.
Step 6: 6. Add this mixture to a baking pan and bake it for 20 minutes in the oven.
Step 9: tip : the more you mix the mixture with your palm, more fluffier the cake will be.