Pumpkin Soup

--2 cups of fresh pumpkin, or 1 can (15 oz)
--4 cups vegetable broth
--2 cups water
--1 red onion. chopped
--2 celery stalks, chopped
--2 yams, peeled and chopped
--3 chopped garlic cloves
--1 inch fresh ginger, peeled and grated
--1 T white sugar
--2 tsp kosher salt
--1 tsp tumeric (this was the first time I bought tumeric, and I do think it's a necessary spice)
--1/4 tsp allspice
--1/4 tsp nutmeg
--heavy whipping cream, 1 T per family member (optional)
--garnish with chopped green onion