Hi 967bar
For lamb try shoulder (sometimes called neck) fillet. It looks quite fatty but this helps it cook. Cut into big pieces and marinate in plain yogurt, tandoori spices, lemon juice and mint for a couple of hours, then either simmer just covered in boiling water and the marinade for 10/15 minutes or place on skewers and grill or bung in very hot oven till done, again 10/15 mins, it cooks like chicken breast so don't over do it. HTH.
Regards
CoR