Every breakfast joint has fried-egg sandwiches, but this egg yolk-colored cart puts them on the pedestal as its raison d’être, each one artfully constructed with the unexpected, from fresh organic jam to nasturtium blossoms. The Monte Cristo, on cardamom-flecked French toast, is already a legend, but the Arbor Lodge is the sleeper: beds of deeply grilled, thick-cut portobello and slow-cooked balsamic onion provide a cozy berth for an over-easy egg, all lacquered with roasted-garlic aioli on buttery, toasty brioche.