Smash turmeric with the garlic, coriander roots and peppercorns to make a paste.
Rinse the chicken place in a ziploc bag. Add the soy sauce, fish sauce & sugar.
Add turmeric to the plastic bag and rub the paste into the chicken.
Poke the chicken with a fork a bit to make holes for the marinade to seep inches Coat well, cover and refrigerate for 4-5 hours or overnight.
After marinating, either grill or bake in the oven until cooked.
To test if your chicken is done, poke with a fork on the thickest part of the meat to the middle of the piece. Pull out the fork and watch the juice come out of the hole. If it’s pink, it’s not done. If it’s clear, it’s done. Don’t cut big slices into the piece or the meat will dry out.