Ingredients 1 cup kosher salt 1 tablespoon pink curing salt (see cook's notes) 1/2 cup sugar 1 teaspoon coriander seeds, crushed 1 teaspoon mustard seeds, crushed 1 teaspoon black peppercorns, crushed 1 cinnamon stick, crushed (1 teaspoon) 4 dried bay leaves, crushed 8 whole cloves 4 to 5 pounds flat- or first-cut beef brisket 1 medium onion, halved, plus 2 more, quartered 1 celery stalk, halved 1 medium carrot, peeled and halved, plus 3/4 pound small carrots, peeled 1 pound baby turnips, peeled 3/4 pound small parsnips, peeled and halved on a bias 1 head green cabbage, cut into 8 wedges (core trimmed but not removed so wedges stay intact when cooked) 12 parsley sprigs, plus 2 tablespoons finely chopped 1 pound small potatoes (golf-ball size), such as baby Dutch Yellow 2 tablespoons salted butter, melted Dijon and wholegrain mustards, for serving Fresh Red and White Horseradish Sauce, for serving Preparation In a large pot, bring 2 quarts water to a boil....