On tap at Ambulance, brettanomyces-laden sour saison utilizes German Calistra-Grundgeist-Strisselspalt hop varieties to create vinous green grape esters, unripe orange-pineapple-guava tartness and dry lemon-limed salting above rustic white wheat spine.  Puckering lemon-soured acidity rules the dry white wine-tinged finish.