INGREDIENTS
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1 yellow onion, roughly chopped
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1 carrot, roughly chopped
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1 celery stalk, roughly chopped
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8 cups chicken stock
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1 bay leaf
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3 thyme sprigs
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2 tablespoons all-purpose flour
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2 cups reduced ham hock stock
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2 tablespoons espresso
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Ham hock meat
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1 tablespoon apple cider vinegar
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Cayenne pepper, to taste