On tap at Ambulance, fiercely complex Imperial Stout-dominated hybrid  (limited edition 2015) blends brewers’ bourbon-aged Undead Party Crasher’s chocolate-chipped cookie dough yeast with Scotch-barreled Blaecorn Unidragon’s vanilla-creamed mocha malting and Pierre Ferrand Billionaire’s cognac-aged barleywine for a completely over-the-top full-bodied monster. Rich caramel-burnt black chocolate creaming picks up luscious rum-spiced vanilla bourbon, sugared molasses, black cherry and burgundy sweetness to contrast less prominent black-tarred hop char (and whimsical black coffee bittering). Tertiary peat whiskey snip and latent fig-raisin quip slip inside mighty mocha marvel.