Duck Breast With Griottines without anise

1 (8-to 10-ounce) boneless duck breast with skin 1 tablespoon olive oil 1 shallot, finely chopped 1/4 cup tawny Port 1 teaspoon Dijon mustard 3 cups torn[...]

4 lrg duck breasts 2 x pears , (use quinces, when in season) 300 ml duck stock made from duck or possibly chicken, (or possibly chicken stock) bones 500 ml[...]