Whisk together the mustard, vinegar, ketchup, honey, Worcestershire sauce, and cumin in a small bowl.
Season the lamb chops generously with coarse salt and black pepper. Place them in a zip lock bag. Pour in the marinade and leave it in the refrigerator overnight.
Bring the lamb chops to room temperature. Oil the grates of the grill with a paper towel dabbed in vegetable oil.
Preheat the grill to medium/low heat. Put the chops on the grill and cook for 8 mins. Flip and cook for 8 minutes. Flip again and cook for another 8 minutes. (***24 mins total).
Remove the chops from the grill. Cover with foil and allow them to rest for 5 minutes. Garnish with sea salt and parsley.
SERVES 4 (2 chops per person)
****With thicker lamb chops it is better to cook them on medium/ low heat for longer. This way you avoid oil flare ups and the chops don’t get charred.