Steep garlic in the vegetable oil by adding both at room temperature to a saute pan. Bring to a boil, then remove from the heat and let sit for 10 minutes. Add all of the remaining ingredients except the fish. Let the marinade cool, then add the fish. Marinate for 6 to 8 hours, refrigerated. Season with salt and pepper. Preheat grill. Grill the fish on both sides until cooked through. Serve with Roasted Artichoke Ragout.
Roasted Artichoke Ragout:
Poach the artichokes in water with lemon and salt. Drain and cool. Cut the artichoke hearts into quarters. Preheat the oven to 350 degrees. Roast the artichokes in a pan with 1 tablespoon butter and salt and pepper.
Saute the garlic and shallots in 1 1/2 tablespoons of the butter. Add the artichokes and toss together. Add the veloute and pine nuts and bring to a gentle simmer. Add the herbs and adjust the salt and pepper. Swirl in the remaining 1 1/2 tablespoons butter.