One 12-pound fresh turkey (preferably fresh; if previously frozen, it must be completely thawed)
Sea salt and freshly ground black pepper
1 stick unsalted butter, softened (optional)
2 tablespoons ground cayenne pepper (optional)
2 1/2 to 3 1/2 gallons peanut oil (the amount of oil depends on the size of your fryer; better to err on the side of buying too much since you can always return any unused, unopened containers)
Sprigs of fresh herbs (sage, thyme, or bay) and dried figs for garnish (optional)