01 - Combine the cold water, kosher salt, and sugar in a large mixing bowl. Stir until the salt and sugar are fully dissolved.
02 - Submerge the chicken or turkey breast in the brine, cover the bowl, and refrigerate for 4 to 8 hours to allow the flavors to penetrate.
03 - Set the oven to 325°F and allow it to fully preheat.
04 - Remove the meat from the brine and pat it thoroughly dry with paper towels. Combine the black pepper, garlic powder, onion powder, smoked paprika, and dried thyme, then sprinkle the seasoning blend evenly over the meat, rubbing it in gently on all sides.
05 - Roll the seasoned meat tightly in parchment paper, then wrap it securely in aluminum foil, twisting both ends to form a firm, compact log.
06 - Place the wrapped meat log on a wire rack set over a baking sheet to ensure even heat circulation during roasting.
07 - Roast in the preheated oven for 1 hour, or until a meat thermometer inserted into the center registers an internal temperature of 162°F.
08 - Remove the meat from the oven and let it cool completely, preferably refrigerated overnight, before slicing thinly for sandwiches.