"Source: 365 Slow Cooker Suppers, Stephanie O'Dea, slightly adapted...."
INGREDIENTS
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1 (4 lb) beef chuck roast
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1 (20 ounce) bottle ketchup
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1 (15 ounce) can tomato sauce
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1 cup brewed coffee, at room temperature
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1 onion, diced
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1/3 cup packed dark brown sugar
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2 tablespoons soy sauce
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1 cup sweet pickle relish
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12 soft hamburger buns
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8 ounces cheddar cheese, thinly sliced