Cut the meat into uniform cubes.

Combine puréed onion, dried lime powder, lime juice, salt, pepper, and saffron; marinate the meat in this mixture for several hours (or overnight).

Thread the marinated meat onto skewers, alternating with small onions, bell pepper pieces, and cherry tomatoes.

Grill over hot coals or a grill pan, turning occasionally, until cooked through and lightly charred.

Serve hot, ideally with rice or flatbread.