Pinoy BBQ marinade

chicken thighs - 4 pounds, boneless, skinless (about 8 to 10 pieces)
soy sauce - 1/2 cup
banana ketchup (or use tomato catsup) - 1/2 cup
chili sauce (bottled) - 1/8 cup
calamansi juice (or lemon juice) - 1/4 cup (calamansi, the Filipino lime is in Asian markets)
brown sugar - 1/2 cup
Sprite or 7-Up soda - 1 (8 oz.) can
fresh garlic - 1 teaspoon, finely minced
sesame oil - 1/8 teaspoon
sea salt - 1 teaspoon
freshly ground black pepper - 1 teaspoon
bamboo skewers - about 8 to 10 pieces, pre-soaked in water for 30 minutes before