INGREDIENTS
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4 tablespoons unsalted butter, softened
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2 tablespoons prepared horseradish
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2 teaspoons finely minced garlic
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1 teaspoon fresh lemon juice
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1 teaspoon salt, divided
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1 pound 80% lean ground chuck
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3 tablespoons dry red wine
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1/2 teaspoon freshly ground black pepper, divided
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Cooking spray
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4 (3/4-ounce) slices smoked gouda cheese
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4 (1/4-inch-thick) red onion slices
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4 potato rolls, split horizontally
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8 thin tomato slices
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3/4 cup baby arugula