Ingredients:

Leg of mutton 1 ½ kg (middle bone should be cracked and fat removed)
Soya sauce 1 tsp
Juice of lemons 4
Vinegar 2 tbsp
Cumin seeds 1 tsp (roasted and ground)
Powdered black pepper 1 tsp
Salt to taste
Cooking Oil 3 tbsp

Method:

Prick the leg of mutton with a fork and mix all the ingredients (except for oil) and leave it to marinate for about 1 ½ hour. Put the leg in a big pot and cover. Let it cook till all the juice dries up. Add the oil to it and in case it is not tender, add half a cup of warm water and leave it covered for a while till it is done. Serve it on a plate or dish garnished with lettuce and cucumber, spoon the remaining sauce from the pot on top of the roast.