Barberries For The Flu

If you stew barberry berries with a little water until they are soft, then squeeze them through a strainer, pressing out all the juice with a wooden spoon and add three pints of water to one of juice, you will have an excellent drink which, if taken hot at night, will induce the perspiration that drives out a cold

From: Gypsy Cures for Coughs and Colds