4 1/4 cups apple cider
3 tablespoons coarse salt
6 allspice berries
1 bay leaf
4 10-ounce bone-in center-cut pork rib chops
4 tablespoons (1/2 stick) butter
5 large leeks (white and pale green parts only), thinly sliced
1 cup whipping cream
1 1/2 pounds Granny Smith apples, peeled, cored, halved, each half cut into 4 wedges
2 tablespoons sugar
1/2 cup chicken stock or canned low-salt chicken broth
1/3 cup Calvados
Olive oil