Although Spot has splendid credentials for carnivories.
"In short order, Josh Kim and his mustard-yellow Spot Burger cart has become a powerhouse draw to 33d and Arch - and for good reason. A former butcher and experienced cook (among other things), Kim hand-butchers his own sirloin, dry-ages the meat, and grinds his burgers daily. The result: a noticeable upgrade in flavor that few restaurants can match. Spot offers funky variations (like the Umami topped with kimchi). But the straight-ahead signature patty alone is worth the trip, and, remarkable for a cart, "spot-on" cooked to medium-rare. The hand-cut fries are worthy, too."
(More for ordering than for eating:) https://twitter.com/Spotburgers Call before 10. 484-620-6901