In a pestle and mortar, pound the garlic, coriander roots, coriander seeds and peppercorns to a paste.
Mix the paste with fish sauce, dark soy sauce, soy sauce, stevia and corn flour in a bowl and add the chicken.
Mix evenly the marinade and chicken.
Cover and leave the chicken to marinate for 1 hour.
Thread about 3 pieces of the marinated chicken onto each skewer and squeeze them tight.
Grill the skewers over medium heat for 10 –15 minutes. Brush the meat with coconut milk during grilling. Flip over every 3-4 min.
Until meat caramelised and cook through.
Serve with rice and chili sauce.