Your grandmother was right—there is nothing like chicken soup for boosting immunity and helping to activate our natural defenses. Making a stock at home, using bones, some pieces of meat and fat, vegetables and filtered water is the best way to ensure maximum benefits. This kind of food remedy can be kept on hand for frequent use during the cold and flu season. According to the highly-esteemed nutrition researcher, Sally Fallon, stock contains minerals in a form the body can absorb easily, including calcium, magnesium, phosphorus, silicon, sulphur and trace minerals. And due to the inclusion of broken-down material from cartilage and tendons, your stock will be full of substances like chondroitin sulphates and glucosamine, now sold as expensive supplements for arthritis and joint pain.