Soak: To start off grilling corned beef you need to soak the beef for about 30 minutes per pound and no less than 2 hours. This soaking needs to be done with warm water or the salt will not dissolve effectively. You also need to change the water every hour and rinse the corned beef off when you change the water. You may choose to place the corned beef in a pot of water and set it on your stove over a low heat for the soaking time.
Season: Once the corned beef has been soaked and rinsed off you can now apply the seasonings. Corned beef is frequently sold with a spice packet. You can use this as a rub on the meat. You can also mix up your own rub. Use coarsely cracked black pepper, cracked coriander seeds, onion powder, thyme, paprika, garlic powder and cayenne. Typically you want a lot of pepper and coriander and less of the other ingredients. Try 4 parts pepper and coriander and 1 part of the others. You can, of course, add whatever you want, but corned beef is traditionally seasoned with peppercorns and coriander so if you want the authentic thing use these. Rub the spices into the meat. You want it to get deep inside so the flavors will spread.
Grill: Now you are ready to grill. You want to grill your corned beef for at a low temperature (around 250 degrees F. (120 degrees C.)). Charcoal and hardwoods will give you better flavors but you can use a gas grill. Either way, go for indirect grilling, fat side up, and use a drip pan under the corned beef
Baste: During the grilling you want to baste the corned beef every 30 minutes. Use some of the rub you prepared with equal parts of water, oil and vinegar to makes something similar to a salad dressing. This will keep the meat moist and also help drain out any additional salt left behind. By basting with seasonings from the rub you continue to add that great flavor to the corned beef. If you introduce some smoke to the process you'll add even more flavor. After 1.5 – 2 hours, wrap in foil and cook 1 hour more, until the internal temperature of the meat reached more than 165 degrees F. (74 degrees C).
