To make the marinade, measure all the ingredients into a shallow dish and mix well. Add the short ribs and mix well to coat. Leave for 2 hours or overnight in the fridge, if possible, to marinate.
Let cool. Pour marinade into large resealable plastic bag. Rub ribs with mustard powder and add to bag; seal bag and turn ribs to coat. Chill, turning bag occasionally, for at least 6 hours and up ...
Remove the ribs from the poaching liquor and place onto a baking tray. Spoon the marinade over the ribs, turning to make sure they are completely coated. Place into the oven to roast for 15 ...
These lamb ribs are perfect because you can have them in the oven cooking slowly before everyone arrives. Just make sure you have plenty of serviettes around for sticky fingers.
Put the rib racks in a bowl and add the marinade. Mix well so the marinade coats the meat, then refrigerate for two to four hours. Occasionally mix the ingredients so the meat is marinated evenly.