RIGHT PROPER BEING THERE KELLERBIER August 30, 2018Beers A-ZRIGHT PROPER BREWING, zwickel lagerJohn Fortunato On tap at Ambulance, lightly lactic kellerbier (a.k.a. German zwickel) lets celery-watered lemon zest soak light white-peppered heat and grassy earthiness. Wispy lemongrass-hibiscus snips sneak in.