Duck Breast without veal grapes

1 tablespoon extra-virgin olive oil 1/2 cup chopped onion (1 small) 3 garlic cloves, crushed 1 tablespoon finely chopped shallot 1 teaspoon tomato paste 1/2[...]

4 gressingham duck breasts salt pepper 4 passion fruit 2 star anise 70 ml whiskey 100 ml maple syrup 10 g black treacle 500 g new potatoes butter 1 bunch[...]