Directions2 to 3 days before roasting:Begin thawing the turkey in the refrigerator or in a cooler kept at 38 degrees F.Combine the vegetable stock, salt, brown sugar, peppercorns, allspice berries, and candied ginger in a large stockpot over medium-high heat. Stir occasionally to dissolve solids and bring to a boil. Then remove the brine from the heat, cool to room temperature, and refrigerate.