In a large pot, bring stock to a boil.
While stock is heating, chop all vegetables into small pieces (approximately 1/2-inch cubes).
In a saute pan, over medium-high heat, melt half of the butter. Saute vegetables with ginger and nutmeg for approximately 15 minutes, or until vegetables are browned. Add remaining butter as needed.
Add Sauteed vegetables to stock, reduce heat, cover with a lid, and simmer for 30 minutes.
Let cool to room temperature and then puree in a blender. Soup should be thick and smooth. If you like your soup velvety smooth, pour through a fine mesh strainer.
Add salt and pepper.
To serve, reheat, ladle into bowls, then drizzle 1 tablespoon of cream into each bowl. Serve in warmed bowls.