Preheat your oven to 190°C.
Peel and slice 2 oranges.
Stuff the duck with the oranges.
Melt the butter and spread on the duck skin.
Put the duck in the oven for 1 hour.
Moisten every 10 minutes.
Press the two other oranges.
Add the orange juice, the soya, the Cointreau and the poultry bouillon in a casserole dish and bring to a boil.
When the duck is baked, slice and coat the duck of sauce!