On Sıraselviler Avenue, the bright neon fast-food counters are part of the city’s late-night vocabulary. Among them, Kızılkayalar stands out for one small, messy Istanbul classic: the ıslak hamburger, or “wet burger.”Do not let the name scare you. A wet burger is a small beef patty in a soft bun, covered with a garlicky tomato-based sauce, then kept warm in a steamy glass cabinet until the bread turns tender and soaked with flavor. It is not elegant. That is exactly the point.Kızılkayalar makes the most famous version in Taksim. The burger is soft, juicy, slightly sweet, slightly sharp, and dangerously easy to finish in a few bites. One often feels like a warm-up, which explains why many people order a second before pretending they had planned it all along.The place moves fast at almost any hour. Students, tourists, nightlife crowds, and locals pass through for döner, fries, ayran, and especially wet burgers. Service stays quick because the whole system runs on rhythm: order, eat, continue into the street.Kızılkayalar works best after a long walk on İstiklal, late at night, or whenever the city convinces you that a steamy tomato-soaked burger is suddenly necessary.