Grain & Vegetable Soup

12 cups water (3 quarts)
1 cup lentils
1/2 cup brown rice
1/4 cup millet
1/4 cup amaranth
1/2 pound mushrooms, sliced
6 scallions or 2 cloves garlic, sliced
4 stalks celery, sliced
4 carrots, sliced
7 cloves garlic, chopped
2 tablespoons parsley
2 teaspoon basil
1/2 teaspoon ginger
1/8 teaspoon or more cayenne pepper
1/2 teaspoon black pepper
1 teaspoon sea salt