Take a medium bowl and flour, sugar, salt, and baking soda in it and mix them well. Now add an egg and (milk + water) in it. Mix them well until a smooth batter is formed. Make sure there are no lumps in the batter. Cover the batter and refrigerate one to two hours. Take a fish mold cake pan and brush them with oil. Place the cake pan on a burner on medium-low heat. Once the pans are heated, pour a thin layer of batter into the fish molds. Remember that, don’t overfill the pans otherwise the cake will pop out of the mold and its fish shape will get distorted. Let it cook for a few seconds. Add 1 tbsp. of Anko paste or the filling of your own choice in the center of the fish. Now add more batter over the filling until it gets covered well. Now close the lid of the Taiyaki mold pan. Cook the batter for 2 – 3 minutes from one side. After 2 – 3 minutes, flip the pan and heat the other side for 1 – 2 minutes until both sides of the cake get a beautiful golden color. Remember that your pan may have different-sized fish molds and your cooking time may vary a bit. Dish them out in a baking rack or plate and let the cakes cool. Now serve the cakes to your loved ones and enjoy 