Mix the glaze ingredients in bowl then pour into a plastic freezer bag. Add the loin steaks, close the bag and massage them with the sauce to cover well. Rest or chill until needed.
To BBQ: preheat the oven to 170°C. Place the steaks on a baking tray, season with salt and pepper. Reserve the marinade. Cover the tray with foil and cook for 20-25 minutes. Brush them with the leftover marinade, place them on the barbecue for 5 minutes, turning frequently.
To Grill: place the steaks on a baking tray, season with salt and pepper. Brush them any leftover marinade. Place the tray under a pre-heated medium/high grill and cook for 14-16 minutes. Turn occasionally.
Serve the loins with a salad and mashed sweet potatoes or potatoes.