Cream of Mushroom Soup I

INGREDIENTS

• 5 cups sliced fresh mushrooms
• 1 1/2 cups chicken broth
• 1/2 cup chopped onion
• 1/8 teaspoon dried thyme
• 3 tablespoons butter
• 3 tablespoons all-purpose flour
• 1/4 teaspoon salt
• 1/4 teaspoon ground black pepper
• 1 cup half-and-half
• 1 tablespoon sherry