For the Mayo, mix all ingredients in small bowl until well blended. Cover and refrigerate until ready to use.
For the Burgers, mix Marinade Mix, sesame oil, soy sauce, honey and vinegar in large bowl until well blended. Reserve 2 tablespoons for brushing burgers during cooking. Add ground beef and onion into remaining marinade in large bowl; mix well. Shape into 4 patties. For best results, refrigerate patties 15 to 30 minutes before grilling.
Grill burgers over medium heat 4 to 6 minutes per side or until cooked through (internal temperature of 160°F), brushing with reserved marinade while cooking.
Serve burgers on rolls with Ginger Garlic Mayo and Grilled Kimchi