1. decide the amount of food by your capacity to eat. thus the extra food remain in your plate will reduce.
2. don't throw the extra/ remaining food in dustbin .
3. try to manage the amount of food in marriages .because a big amount of food is wasted in marriages and other parties .
4. If the food remains and not eat by you or relatives than don't throw it , distribute it to poor peoples.
5. take care about the food items , so they will not get spoil.