INGREDIENTS
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1 tablespoon grainy mustard
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2 teaspoons white-wine vinegar
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Coarse salt and ground pepper
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1/4 sweet onion (such as Vidalia), thinly sliced
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1 Kirby cucumber, cut into thin strips
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1 tomato, halved, seeded, and thinly sliced
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1/2 cup celery leaves
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2 tablespoons chopped sport pepper or peperoncini
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4 beef hot dogs
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4 hot dog buns, grilled
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4 pickle spears
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Relish