Black currants and chicken

One of my most spectacular failures in recent cooking was making a black currant sauce to accompany chicken breasts. Now, mind you, I was actually combining a recipe I found online for this dish and one for black currant sauced duck breast, so I felt pretty good going into the dish. But, for some reason, the dish became very bitter and unpleasant. And, mind you, both Julie and I like black currants, as a matter of course. But this one was bad enough to require procurement of alternative food. Not good.