Chop, clean and saute 1 large leek in some olive oil. While it softens, trim 4 cups of winter squash into 1- to 2-inch cubes. Add to pot and add a mixture of water and chicken stock to cover. Add 1 tsp salt, 1/4 tsp cayenne and either 1/2 tsp cumin or 1/4 tsp pimenton. Bring to simmer for 35-45 minutes (until squash is soft). If using a pressure cooker, it will need about 10 minutes. Puree in blender and strain. Add a bit of light cream and serve.
NOTE: If saving for later, reheat and then add the cream.