Thai Tuna Kabobs

Thaw fish, if frozen. If using wooden skewers, soak skewers in water for at least 30 minutes before using. Rinse fish; pat dry with paper towels. Cut fish into 1-inch pieces; set aside. For marinade, in a small bowl combine 2 tablespoons of the cilantro, the lemon peel, lemon juice, vinegar, chile pepper, sesame seeds, and oil; set aside.

On eight skewers, alternately thread fish,* zucchini, and red onion, leaving 1/4 inch between pieces. Place kabobs on a platter or in a shallow dish. Brush 1/4 cup of the marinade over kabobs. Cover and marinate in the refrigerator for 2 to 4 hours. Cover and chill the remaining marinade.

For a charcoal grill, grill kabobs on the greased rack of an uncovered grill directly over medium coals for 10 to 12 minutes or until fish begins to flake when tested with a fork but is still slightly pink inside, turning occasionally during grilling. (For a gas grill, preheat grill. Reduce heat to medium. Place kabobs on greased grill rack over heat. Cover and grill as directed.)

Transfer kabobs to a serving platter. Sprinkle with the remaining 2 tablespoons cilantro. Serve the remaining chilled marinade as a sauce. If desired, garnish with lime wedges.