First for making rasgulla boil 1 litre milk in a pan. Squeeze lemon juice in a bowl and add some water. Now pour it in the boiling milk. Stir continuously till it starts curdling. When curdled properly and u see greenish whey then switch off the flame and drain and strain the whey using a cotton cloth. Wash the chhena 2 time using water and squeeze it properly. Keep chhena for some time till becomes dry.