Using a fork, poke numerous holes into your cut of meat to allow the marinade to penetrate.
Slip the meat into a large zip bag, give the marinade one more stir and pour it into the bag with the meat.
Squeeze out as much air as possible and then seal the bag. Make sure to distribute the marinade around the meat. Place the bag on a plate in case it leaks.
Allow the meat to marinade for at least 4 hours, and overnight if possible. Flip the bag occasionally to allow gravity to help with the penetration of the marinade.
Remove the meat from the bag, and retain the marinade to use as a baste.
Grill the meat, basting every time you turn it.
Notes
A marinaded beef roast on the grill, showing the beautiful mahogany color.