Place the turkey into a large baking dish. Pierce 1-inch slits through the turkey skin into the meat (about ½-inch deep). Pour in the beer; add the crushed garlic, stock powder and salt; turn the turkey skin side down; cover with foil and refrigerate for 4-6 hours or overnight for a deeper flavour. (Rotate the turkey once while soaking in the brine to ensure an even flavour when baking.) You can use a large conatiner for proper brining if you wish, but I find this method works and fits in our refrigerator!

When ready to roast; preheat oven to 200 °C | 390°F. Drain half of the beer marinade, leaving the remaining liquid in the pan. Cover with foil and make sure the sides of the pan are completely sealed. Place into the oven and roast for 1 hour 30 minutes, or until the turkey is cooked through. Remove from oven, uncover and rotate each portion. Change oven setting to grill (or broil) on medium-high heat and continue to roast until the skin is golden and crisp. Rotate to crisp the underside. Allow to rest 10-15 minutes to redistribute the juices.