1. Whisk together the Dijon, soy, garlic, herbs, spices, and oil.
2. Paint the marinade generously over the exposed surfaces of lamb. Place the racks in a roasting pan and let marinate at room temperature for 1 hour.
3. When ready to serve, preheat the oven to 400o.
4. Roast the lab for 25 minutes for medium-rare.
Remove to a platter, carve the rack and present. 4 portions