Make this a part of your regular diet or give your immune system a boost when it needs it.
Bring the broth, onion, garlic, carrot, mushrooms and ginger root to a slow boil. Reduce heat and simmer on low, covered, for 15 minutes. Remove from heat; add the lemon juice and parsley. Cover and steep, off the heat, for 5 minutes. Eat and enjoy!
For a five-serving batch, you can use up to 10 cloves of garlic, up to 8 shiitake mushrooms or up to 3 tablespoons ginger, depending on your preference.
You can start the soup with half the total garlic you desire; then crush the remaining cloves, adding them with the lemon juice at the end. This retains more of the immune modulating constituents.