boneless chicken thighs, cut into pieces • chicken wings • chicken frames (carcasses) • duck beaks (1 kilogram) • whole black peppercorns (25 grams) • garlic (about 50 grams) • cilantro roots • lemongrass, thinly sliced • palm sugar (230 grams) • soy sauce (60 grams) • oyster sauce (125 grams) • seasoning powder •