INGREDIENTS
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2 celery stalks, cut into 1/2-inch dice
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2 medium carrots, peeled and cut into 1/2-inch dice
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1 Granny Smith apple, peeled, cored, and cut into 1/2-inch dice
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1 tablespoon vegetable or olive oil
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5 cups chicken broth
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1 medium baking potato, peeled and cut into 1-inch cubes
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1/2 pound Cheddar, preferably white, grated (2 cups)
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1 teaspoon Worcestershire sauce