Add only 1 to 2 cm of water. Add 1-2cm deep warm water to the baking pan where the mold is placed. If you are using a mold with a live bottom, wrap the mold with tin foil and then fill it with water to prevent water from entering the cake batter. By adding warm water to the baking pan, The cake batter can be heated evenly to avoid dryness or unevenness.