Combine the garlic, brown sugar, soy sauce, bourbon, olive oil, red pepper flakes and black pepper in a medium bowl and whisk until the brown sugar is mostly dissolved.
Use this marinade for chicken pieces or breasts, pork chops, pork tenderloin beef flank steak, london broil, sirloin or any other cut you'd normally marinate.
Marinate for at least 60 minutes or up to overnight to really penetrate.