Flu Fighter Chicken Stock

3 1/2 to 5 lb organic chicken (with bones and skin), cut into 9 pieces (see NOTES)

to 1 tablespoon apple cider vinegar

water to cover plus about 1"

to 10" lemongrass, sliced in half

to 4 shallots, cut in half lengthwise (skin on)

head garlic, cut in half across the middle (skin on)

to 4" ginger root, peeled and sliced lengthwise

bunch scallions, white and darks separated, whites cut lengthwise (greens reserved for soup)

to 3 tablespoons Kosher Salt