1- Take all the dry ingredients and sieve them in a big bowl
2- Take an another bowl, add butter and condensed milk both and mix them.
3- When the batter is light and fluffy, add dry ingredients in and mix
4- Lastly add lemon juice,vanilla and water
5- Pour in a greased baking dish and bake in a preheated oven at 180'centigrade for 25 minutes.