• Use always whole full cream milk (low fat, zero fat, skim milk does not work).
• Don't throw the whey; you can use the whey to make chapatti, rice, soup etc.
• You can use 1 lemon juice or 1-2 tbsp vinegar instead or substitute of curd.
• You can refrigerate in an air tight container or air tight zip lock bag.
• It stays fresh at least 1 week in a fridge.