Ginger broccoli soup

1 tb Ghee
      1 md Onion, sliced finely
  3 3/4 c  Vegetable stock
  2 1/2 c  Water
      1 ea 1" piece of ginger, grated
    1/2 ts Cayenne pepper
           Juice of 1 lemon
    3/4 lb Fresh broccoli, cut into
           -- bite sized florets
 
  Melt ghee over medium low heat & add onion.  Cook till it begins to brown,
  stirring occasionally.  Meanwhile heat stock, water, ginger in pot for 5 to
  6 minutes, do not let boil.  Add onion, cayenne, lemon juice & broccoli.
  Cook over medium heat for 7 minutes, stir occasionally.  Do not let soup
  boil.  Serve right away.
  
  Adapted from Ismail Merchant, "Indian Cuisine"