One thing I have leaned about eating waterfowl is that it is best eat'n fresh, aged 3 days to a week (2 week max), if you are going to eat it like a steak, salt and pepper only. My duck does not stay in the freezer more than a year, but if it is in there a month, not bad but not as good as good as fresh. I ate some nice mallards steaks froze about 8 months this year, cooked like a steak and it was that good. I got other ways of cooking duck that has been in the freezer a long time, it like poppers, flautas is really good. My son cooked some canadas there were frozen in the crock pot, we made tacos it was excellent!
I have done kuby's twice. First time, it was outstanding, delish. But I had this funny feeling that threw away all my duck and just gave me sausage, I could not taste the duck, nor see it. The second time I asked them what % sausage they used, can't remember what they said, I told them last time I did it I could not taste the duck. Well the batch I got back this time I could taste the duck, and it was not as good, and dry lol. I have not done it again, but I might give it another shot.
This is the best way to cook it, fresh...
That layer of fat on top just bursts with flavor.