Dec 22, - Duck Breast with Grand Marnier Sauce. Serves 4 - 6. 4 duck breast fillets. 3 tablespoons olive oil. Sea salt and fresh ground pepper. 1 tablespoon sugar. 1 cup freshly squeezed orange juice, strained. 1 tablespoon orange zest. 1/3 cup Grand Marnier liqueur. Ingredients. Serves: 4. 4 duck breast fillets, with skin. salt and ground black pepper. 1 tablespoon Grand Marnier liqueur. 2 tablespoons chicken stock. 2 tablespoons thick cut orange marmalade.