Khoresh-e Kadoo - Gray Squash Lamb Stew

In the Persian cuisine there are a number of tasty, slow cooked stews (khoresh/khoresht) that combine the seasonal vegetables with either meat or chicken. Iranian food is not heavily spiced and in order to achieve the optimal taste, some patience, time and planning is required. I usually buy the needed ingredients a day in advance and take care of some of the things that could be done ahead