Grilled Peppercorn Chicken Sandwich

Ingredients

• ½ cup(s) white vinegar
• 3 tablespoon(s) crushed black peppercorns
• 4 hamburger buns
• 1 teaspoon(s) salt
• 2 teaspoon(s) parsley, dried
• 2 teaspoon(s) cilantro, dried
• 1 clove(s) garlic, minced
• + 5 more ingredients
• • 2 shallots, minced
  • 4 tablespoon(s) onions, minced
  • 4 chicken breasts, skinless, boneless
  • ½ cup(s) vegetable oil
  • 1 tablespoon(s) oregano, dried

In a medium glass mixing bowl, combine all of the ingredients (except the chicken breasts and the buns); blend well. Place the chicken breasts in the marinade, cover, and refrigerate for 4 hours or overnight. Heat the grill to medium. Coat the grill grates with vegetable oil. Remove the chi...

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