Lamb with fennel and nigella

This was simple and enjoyable. The vinegar is quite prominent in the end result. Served it with stir-fried cauliflower with cumin - a great combination.

I'm not quite sure what liquid to bring to a boil over a high heat in the third step - there is less than a cup of liquid to two pounds of meat, and some of that is absorbed by the meat. I added some water, but I had to boil that off later. Maybe next time let it sweat over lower heat instead?