Combine soy sauce, vinegar, onion and garlic in a bowl. Add chicken. Marinate 3 hours or overnight in refrigerator. Remove chicken from marinade. Discard marinade. Grill chicken until cooked and brown on both sides. Finely chop chicken. Add chile peppers, green onions, lemon juice and black pepper. Toss well. Serve with rice or lettuce leaves.
Step by Step
1. Combine soy sauce, vinegar, onion, and garlic, in a bowl.
2. Add chicken and marinate for a few hours or overnight.
3. Discard marinade and grill chicken.
4. Finely chop chicken.
5. Combine with lemon, green onions and chiles.