On tap at Ambulance, inviting oak-aged sour ale brings mildly vinous wining to dry barnyard leathering and ‘cherry pie’ souring, maintaining large head retention. Tannic grape pucker never gets oppressive, allowing crossover possibilities for more mainstream thirsts. Dark purple grape-skinned pinot noir tones scurry across pinkish blush rosé snips and black grape-skinned zinfandel notions as well as tart plum, quince and berry wisps.