Marinate the chicken with soy sauce, minced garlic, calamansi juice, ground pepper, sugar, banana ketchup, and soda. Mix them well and keep in the fridge for at least 30 minutes or for some overnight. The favorite parts of the chicken for the barbecue are the thighs, breast, wings and drumsticks.
This video shows another recipe for chicken barbecue.
Find it online: https://pilipinasrecipes.com/filipino-chicken-barbecue-recipe/