what is the best home made remedy for immunity booster in kids?

A. You can actually give ginger juice and honey mixture regularly apart from that now since it is winter blueberries are in season so just give one shot of Gooseberry juice to the child you can mix it with some warm water that you can give along with that you can add some turmeric black pepper and 2 teaspoons of dry fruit powder into the milk that will also help avoid junk and sugary food