"Get this all-star, easy-to-follow Sweet and Spicy Onion Relish recipe from Diners, Drive-Ins and Dives..."
INGREDIENTS
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2 medium yellow onions or sweet onions, when available
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1/4 cup vegetable oil
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1 teaspoon freshly ground black pepper
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1 tablespoon crushed red pepper flakes
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3 cloves fresh garlic, crushed
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1 cup light brown sugar
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48 ounces root beer
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Hot dogs, cooked, for serving
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Brown mustard, for serving
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Mayonnaise, for serving