Grilled Kielbasa with Sauerkraut and Onions

INGREDIENTS

• 3 cups sauerkraut, drained
• 1/2 teaspoon cayenne
• Pinch salt
• Honey Mustard Dipping Sauce, recipe follows
• 1/4 cup honey
• 1/4 cup Dijon mustard
• 3 tablespoons freshly chopped parsley leaves
• 3 tablespoons sugar
• Pinch cracked black pepper
• 1 tablespoon prepared horseradish
• 1 onion, sliced
• 1/4 cup yellow mustard
• 1 1/2 pounds smoked Polska kielbasa
• 2 tablespoons butter