I saw this great article about how chicken soup helps to heal from a cold or flu: Chicken soup found to fend off the flu.
Make it gluten-free and organic, and add herbs, garlic and mushrooms, to make it even more immune supportive.
It makes a difference, when fending viruses, to avoid sugar, alcohol, and dairy products—but still feed yourself healthy protein, fats, and carbs every 2 to 4 hours and drink plenty of water and herbal tea.
My favorite tea for colds, flus, sore throats, and coughs is Throat Coat by TraditionalMedicinals.