Best of Boston

On the desertlike stretch of Mass. Ave. that cuts through Porter Square, Christopher’s is a tiny oasis, its green umbrellas beckoning from the T station like palms in the sand. There are well-priced options like fish tacos and burgers with mushrooms and Swiss cheese, and a host of veggie choices that suit the less carnivorously inclined. And once you sample the selection of ice-cold beers, you’ll know for sure that this retreat is anything but a mirage.