New Kosher Smash Burger Spot, Shmash, Launches in NYC
A new kosher burger concept, Shmash, has opened in New York City, bringing a fine-dining approach to the popular smash burger format. Operating as a delivery and pickup-only “ghost kitchen” on the Upper East Side, Shmash focuses on high-quality ingredients and unique flavor combinations.
From Fine Dining to Smash Burgers
Executive Chef Guy Kairi, who spent two decades in fine dining, founded Shmash with the goal of creating a superior burger experience. Unlike many fast-casual burger joints, Shmash prioritizes kitchen discipline and ingredient quality. The beef is dry-aged on-site, ground fresh daily, and the milkshakes are made with house-made dairy-free ice cream.
Menu Highlights
The menu features a range of burger options, starting with the classic Shmash burger, which includes vegan cheddar and a house-made shmear. More adventurous options include the Black Label Shmash, with a double patty, lamb bacon, caramelized onions, and tomato, and the West Coast burger, featuring double patties, lamb bacon, avocado, and jalapeño mayo. A dry-aged grilled burger is also available for those who prefer a traditional preparation.

Beyond burgers, Shmash offers a standout Ribeye Schnitzel, a thin-cut, breaded ribeye with Korean spicy shmear, served as a sandwich or a full plate with hand-cut fries. Loaded fries, topped with lamb bacon, caramelized onions, vegan cheddar, and mixed mushrooms, are available as a shareable side.
Ordering and Location
Shmash currently operates as a delivery and pickup-only establishment. Orders can be placed through their online ordering system. The restaurant is located on Lexington Avenue in the Upper East Side of Manhattan.
Key Takeaways
- Shmash is a new kosher restaurant specializing in smash burgers.
- The restaurant is led by Executive Chef Guy Kairi, formerly of fine dining.
- Shmash emphasizes high-quality ingredients, including dry-aged beef and house-made dairy-free ice cream.
- Ordering is available for delivery and pickup only.