Down a discreet doorway, The Library operates as a hidden lounge styled as a nod to Chicago's long speakeasy history — a separate, quieter counterpoint to the main dining room above.
The menu of American classics draws steady mentions for mussels, orecchiette, burrata, brussels sprouts, mashed potatoes, and a chocolate cake that shows up often in reviewer photos, alongside a burger that's built its own following.
Michelin has awarded Gilt Bar a Bib Gourmand across multiple Chicago guides, including 2025, 2024, 2023, 2021, and 2019.

