Tass kebab, sometimes also called "Persian Kebab," is a highly fragrant and rich version of shish kebab. The tomato paste -based marinade, with the usual onion, pepper, garlic and Chaimen seasoning mix is the same as is used with the grilled shish kebab - but when cooked in this manner, tastes different, somehow. This version is an excellent alternative for a cold winter night, when you might want to impress your guests with an "exotic" main dish - but have absolutely no intention of freezing your extremities, hovering over an outdoor grill.
When properly prepared, and made from good piece of leg of lamb, it is also so tender that you can cut it with a fork. Often, it’s made in the seasons when grilling the more popular, and well-known, Shish Kebab is not practical.
Some versions call for layering uncooked rice on top of the uncooked meat and steaming both together. This version is easier to get "right" the first time out.