Even health food nuts need to get their grease on once in a while, and vegans are no exception. That’s what makes Souley Vegan such an epic fusion of two extremes that feed on many of our dietary desires: the soulful bliss of high-salt, greasy foods and the vegan vigilance of a veggie and grain-oriented diet. Whether you’re an omnivorous eater putting back brews at Beer Revolution next door, or a vegan acolyte craving a junk-food fix, Souley Vegan delivers. The mac ‘n’ (not) cheese is so perfect a substitute to its dairy-based kin that it leaves the eater convinced it’s the real thing. And the bite-size fried okra is like greasy popcorn at the movies. However, the best deals come for those who bring a group — and the finger-food nature of the dishes here is well suited for that — as $19 offers a thorough exploration of the menu that feeds at least four.