1. Cut meat into 3/4-inch chunks.
2. Mix spice paste and sugar. Coat meat with mixture.
3. Thread meat equally onto skewers.
4. Lay skewers on a lightly oiled grill over hot coals or high heat on a gas grill (you can hold your hand at grill level only 2 to 3 seconds) and cook, turning to brown on all sides, 6 to 8 minutes. Serve hot or at room temperature.