I'm sorry. Everyone seems to like this recipe but I hated it. I thought the sauce was terrible. I think it was the vinegar I didn't like. My family liked it though. I served it with white rice and peas. I liked the first few bites then I had to really choke the rest down. After I realized I didn't like the sauce, I tried to add a few more spices (garlic salt, onion powder, oregano, a little of the chicken broth) and a little flour to thicken it up a bit. It was OK at best to me, but as I said, the rest of the family liked it. None of us cared for the cooked grapes, however.
Not the worst I've ever had, but I think if I ever make this again I will omit the vinegar.