Preheat oven to 200 degrees. Cover a baking sheet with aluminum foil and place sliced onions in the center.
Combine tomato paste, coconut aminos, coconut vinegar, garlic, and jerk paste in a small bowl. Rub the rack of ribs with the sauce, covering it completely. Place the sauced ribs on top of the onions and cover with another sheet of aluminum foil. Seal the ribs in a packet by rolling up the ends of the foil and place in the oven.
Allow the ribs to cook in the 200 degree oven for 8-10 hours.
When the ribs are finished, remove the meat (the bones should slide out easily) and plate.
Get yourself some.