Question

how to preservation food??

Answer 1

1.we can preserve food to stored food in refrigerator
2.chemicaly process
3.warm the food item to die all bacteria

Answer 2

there are many ways to preserve food you can preserve your food by freezing it
or by adding salt to it or adding oil to it and also by preventing it from water if it's dry substance and these preservation techniques depend upon the food you want to preserve