Duck breasts in bitter sauce

Take the meat and separate it from the skin. Cut into slices of the size you like best. Fry in butter and sunflower oil on both sides and transfer it to a saucepan.
In the meantime, move on to the fruit.Remove the zest from one orange and put it in a saucepan where the duck is cooking. Let it boil a little. It will give our food a surprisingly bitter taste.
Fry the onion until golden brown. Here you squeeze the juice from half a lemon and an orange, add wine. Let it boil for one or two minutes and then pour our meat. Close the lid and let it reach readiness. It's about an hour or an hour and a half.
Duck breasts are ready, but don't rush, that's not all. Put them in the oven so that they get a beautiful look.
Now we need the liquid in which all this was prepared. Bring it to a boil and pour in the starch that you have diluted with water before. The zest can be thrown away, we won't need it anymore. You need to cook this sauce until it becomes the consistency of syrup. Pour them over the meat and enjoy your meal.