Made this last night, with some success. However, because of all of the acid in the lentils, the cooking time required to get them tender was about another 20 minutes. They were still not quite as tender as I'd like. I think next time I'll cook them without the vinegar, and stir it in at the end after the lentils are tender. Otherwise, the flavors are very good and.
I made this when it came out several years ago. I was going through my recipes today, and by George, I'm making this for company for dinner. It has such good flavors that go well together. Great autumn food.