01 - In a large saucepan, combine apple cider, kosher salt, brown sugar, peppercorns, garlic, bay leaves, and thyme. Heat over medium, stirring until salt and sugar are dissolved. Remove from heat, stir in cold water, and cool to room temperature. Add ice if needed to expedite chilling.
02 - Place turkey breast in a large sealable container or zip-top bag. Pour cooled brine over turkey, making sure it is fully submerged. Refrigerate for 8 to 12 hours.
03 - In a small saucepan, combine cranberries, apple cider, sugar, balsamic vinegar, orange zest, and salt. Bring to a boil, reduce heat, and simmer for 10 to 12 minutes, stirring occasionally, until cranberries burst and glaze is thickened. Remove from heat and allow to cool.
04 - Preheat oven to 350°F. Remove turkey from brine, rinse thoroughly under cold water, and pat dry with paper towels. Coat turkey breast evenly with olive oil, ground black pepper, and thyme.
05 - Place turkey breast on a rack in a roasting pan. Roast for 45 minutes. Brush with cranberry glaze, then continue roasting for another 25 to 35 minutes, basting with glaze every 10 minutes, until internal temperature reaches 160°F.
06 - Remove turkey from oven and let rest, loosely tented with foil, for 15 minutes. Slice and serve with additional cranberry glaze.