On tap at Taphouse 15, lactic marshmallow creamed ‘dessert forward’ New England-styled Imperial IPA contrasts vanilla-sugared tropical fruiting against sour yogurt milking with promising results. Ambrosia-like grapefruit, red grape, mandarin orange, pineapple, passionfruit and cherry rally takes on zesty lemon meringue tartness above reluctant acidulated pale malting.