Start by removing the sinewy membrane from the pork butt. Keep some fat.

Cut the meat into 2-inch cubes. Slice the onions.

In a large bowl combine pork cubes, onion slices, grapeseed oil, salt, pepper, coriander and water.

Mash ingredients thoroughly to evenly coat pork cubes and onions with marinade.

Seal and refrigerate for 6-12 hours. After refrigerating, place meat and onions on skewers.

Grill over medium-high heat, turning occasionally for about 5 minutes or until the pork is cooked as desired.