If using a blender/small food processor, peel the garlic, ginger and onion then put in the machine with the allspice, thyme, soy sauce, honey, lime, cayenne/chili, salt, cinnamon and nutmeg. Blend until fairly smooth. Alternatively chop the garlic, ginger and onion finely or grate them them mix with the other ingredients.
Pour the marinade mixture over the chicken thighs. Make sure the chicken is well covered and leave refrigerated overnight or for at least 8 hours.
Grill over a medium heat until the chicken is cooked through, around 10 minutes on each side, turning every few minutes to avoid them sticking.
Video
Notes
Note preparation time doesn't include marinading time.