Place pumpkin puree in food
processor or electric blender. Add ginger and enough broth and cream to liquefy.
You should end up with 12 cups of liquid. Pour into saucepan and add nutmeg,
salt and pepper. Bring soup to a simmer and adjust seasonings (especially salt).
Meanwhile, set aside half
of yogurt and place in squirt bottle. Place remaining yogurt in bowl of food
processor with cilantro and lemon juice. Blend to liquify. Transfer to squirt
bottle.
Serve soup in heated soup
bowls and decorate tops with dots cilantro puree and swirls of yogurt. Serve
at once with a green salad and hot sourdough rolls.