There’s a beautiful simplicity to the sort of burger served at the neighborhood hole-in-the-wall where you go to “grab a burger.” And Oak in Beacon Hill serves a burger so honest you could swear on it in court: an impeccably seasoned a third of a pound of Painted Hills beef, draped in melted cheese between a rich bun generously smeared with a spicy roasted garlic aioli, all together tall enough to need a satisfying smoosh with the hand before taking that first bite. Wash down with microbrews or wine on drafts. Repeat—this time perhaps with Belgian frites, salad, soup, a sandwich, or something off the Oak’s entirely vegan section.