In Britain they use a "mint sauce" they either buy or make <as mentioned above> using malt & white vinegar, fresh mint, and sugar...then again they like cooking their meats till they're grey, which sucks most of the flavor <flavour> out of them.
Personally, the night before cooking a leg of lamb, I poke it all over with a knife and put slivers of garlic in the slits, then make a rub of chopped garlic, rosemary, thyme, salt, pepper and olive oil and smear it all over; wrap tightly in plastic wrap. Next day I take out of fridge at least an hour before putting it in the oven; place on a "rack" of long-cut carrots & celery & chunky onions <to flavor the gravy, but toss away>; and cook till it is med-rare (after a 10 minute rest). I serve it with the gravy I make from the drippings in the pan. If there is a good deal of fat in the pan, drain it off, toss with cut potatoes, salt & pepper; and roast in a HOT oven for about 30-40 minutes (depending on size of potatoes), tossing occasionally to brown all over.
I'll be spending next month in the UK, so I guess I'll have to get used to the grey meat again :roll: but the clotted cream teas will help make up for it.
.