Can confirm you can get it at Sainsbury's but not in the industrial sized vat needed to make proper wings.
Since we are talking about regional food here, I need someone to airlift me in some proper brats (not Johnsonville either - a Miesfelds Grand Champion brat) that I can grill and then "warm" in a vat of beer until ready to eat. Butter up a proper Sheboygan hard roll from City Bakery and chow down.
Somehow the brats from the German deli just aren't the same....