Created by JostLori on February 14, 2017
Step 1: To make the marinade, put the garlic, shallot, lemongrass, ginger, and sugar in a food processor and pulse until very finely chopped. With the motor running, add the soy sauce through the feed tube and puree until the paste is as fine as possible. Transfer to a bowl and whisk in the fish sauce, five-spice powder, and pepper.
Step 2: Place the flattened chicken in a 1-gallon heavy-duty resealable food storage bag, add the marinade, and refrigerate. Marinate for 6 to 8 hours.
Step 3: Remove the chicken from the refrigerator about 45 minutes before you plan to grill. Prepare a moderate charcoal fire for indirect grilling or preheat a gas grill to medium (375°F), leaving one burner unlit for indirect grilling.
Step 4: Remove the chicken from the marinade, reserving the marinade. Brush the skin side of the chicken with some of the marinade. Place the chicken, skin side down, over indirect heat. Cover the grill and cook until the skin is richly browned and crisp, 15 to 20 minutes. Brush the flesh side of the chicken with the remaining marinade, then turn the chicken, skin side up, cover the grill, and continue grilling over indirect heat until the juices run clear when a thigh is pierced, or an instant-read thermometer inserted in the thickest part of the thigh away from the bone registers 165°F, about 15 minutes longer. Let rest for 10 minutes before carving into serving pieces.