1 small onion, thinly sliced
4 garlic cloves, smashed with the flat side of a knife
1 teaspoon vegetable oil
5 or 6 branches rosemary, each 4 to 5 inches long
4 ½ cups
1 lemon, quartered
2 rabbits, cut into pieces
3 cups all-purpose flour
3 tablespoons freshly ground black pepper
2 tablespoons paprika
2 tablespoons fine sea salt
2 teaspoons cayenne pepper
2 tablespoons baking powder
2 cups buttermilk
Oil for deep-frying
Make the brine: In a medium saucepan over medium-high heat, sauté the onion and garlic in the oil until translucent, 3 to 4 minutes. Add 3 tablespoons salt after the onion and garlic have cooked for 30 seconds or so. Add the rosemary and cook to heat it, 30 seconds or so. Add the water and lemon, squeezing the juice from the wedges into the water and removing any seeds. Bring the water to a simmer, stirring to dissolve the salt. Remove from the heat and allow the brine to cool. Refrigerate until chilled.
Place all the rabbit pieces in a large, sturdy plastic bag. Set the bag in a large bowl for support. Pour the cooled brine and aromatics into the bag. Seal the bag so that you remove as much air as possible and the rabbit is submerged in the brine. Refrigerate for 8 to 24 hours, agitating the bag occasionally to redistribute the brine and the rabbit.
Remove the rabbit from the brine, rinse under cold water, pat dry, and set on a rack or on paper towels. The rabbit can be refrigerated for up to 3 days before you cook it, or it can be cooked immediately. Ideally, it should be refrigerated, uncovered, for a day to dry out the skin.
Combine the flour, black pepper, paprika, sea salt, cayenne, and baking powder in a bowl. Whisk to distribute the ingredients. Divide this mixture between two bowls. Pour the buttermilk into a third bowl. Set a rack on a baking sheet/tray. Dredge the rabbit in the flour, shake off the excess, and set the dusted pieces on the rack. Dip the pieces in the buttermilk, then dredge them aggressively in the second bowl of flour and return them to the rack.
Heat oil in a pan for deep-frying to 350°F. Add as many rabbit pieces as you can without crowding the pan. Cook the meat, turning the pieces occasionally, until they are cooked through. Remove to a clean rack and allow them to rest for 5 to 10 minutes before serving.