Instructions: Saute the onion in butter until soft, about 5 minutes. Add the flour, salt, pepper, and nutmeg and stir until blended and bubbly. Remove from heat and gradually stir in the chicken stock and milk. Return to heat, bring to a boil, and cook, stirring, until thickened. Add the squash and Worcestershire, reduce heat to low, and cook, stirring often, until heated through. Blend together the egg yolk and cream; stir in some of the hot soup, then stir the egg mixture back into the hot soup. Cook until soup is heated through and the egg has thickened.

Yield: 6 servings.

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