Thanks for the tips everyone - will have another look. Have been trying the international aisle as well as oil & vinegar section but didn't think to look in the vegies. Will check O & V again as well. When you ask staff nobody has ever heard of it!
I though white wine vinegar might be a bit pungent. Could water it down if I got desparate though. Good point about the non-alc white wine - I'll have a hunt for that too
