My daughter always complains that I insist too much on "Resteverwertung" (I was sure that "leo" did not know this, it means re-use of stuff). I always try to re-use the duck fat that I took away from the main duck dish.
In this case I got no criticism. I used the duck fat to deep fry sliced Zucchini. When they were nicely brown and cross, I added simply a handful of cashew nuts - Ready to serve.