:- It won`t get spoiled atleast for 5 days.
:- Khoya or Mawa can be made at home. Boil 1 litre of milk. Add few drops of vinegar or lemon juice. When the milk spoils, take it away and strain the water in it. In a hot pan, add the curdled milk and saute well. Your mawa or Khoya is ready. You can even buy from any diary farm.