How do you get into The Hidden Flask?
We have not confirmed it. The Hidden Flask is in the directory because it described as hidden, and that is the whole of what we can stand behind about its door.
The drinks at The Hidden Flask
How the venue describes itself: “The Hidden Flask is a high-end speakeasy-inspired lounge offering a curated cocktail menu and a unique ambiance designed for discovery. Blending old-world charm with modern indulgence, we cr…” (from its own website, retrieved 9 October 2026)
The current drinks list is published on the venue’s own site — see the menu.
Beyond what the venue publishes we have not verified a list, so what follows is the period rather than the bar: Bee’s Knees, Southside, and Last Word are all drinks of this era, and each links to its origin and its build.
Where The Hidden Flask sits
The Hidden Flask is in South Bound Brook, New Jersey, in Somerset County, in the Mid-Atlantic of the United States.
This is currently the only verified hidden bar our directory lists in South Bound Brook. If you know another, tell us.
New Jersey holds 23 listed venues in this directory. See them all on our New Jersey speakeasy guide.
Prohibition in New Jersey
New Jersey came under national prohibition on 17 January 1920, when the Eighteenth Amendment took effect and the Volstead Act defined an intoxicating beverage as anything above one half of one per cent alcohol — a threshold strict enough to close breweries that had expected to survive.
More on the period in our history of Prohibition in New Jersey.
What the newspapers recorded in New Jersey
Searching the Library of Congress run of New Jersey newspapers for speakeasy, blind pig and bootlegger across 1920 to 1933 returns dated pages anyone can open. These are from New Jersey:
- The Lambertville record, April 16, 1920 — read the page at the Library of Congress
- Perth Amboy evening news, February 28, 1921 — read the page at the Library of Congress
- Perth Amboy evening news, March 29, 1921 — read the page at the Library of Congress
- Perth Amboy evening news, November 7, 1921 — read the page at the Library of Congress
Planning a visit
Hours published by the venue:
- Sat 12:00 PM – 1:30 AM
- Sun 12:00 PM – 10:30 PM
- Thur 4:00 PM – 12:00 AM
- Wed 4:00 PM – 11:00 PM
Hours as published on the venue’s own site, retrieved 9 October 2026.
You can reach The Hidden Flask by phone on (732) 515-1896, through its own website, and on Facebook and Instagram.
The address is 295 Canal Rd, South Bound Brook, NJ 08880-1169. Open in Google Maps.
What we have confirmed
For The Hidden Flask we hold street address, telephone number, official website, social accounts, opening hours, a published drinks list, and an online booking link. We do not yet hold a listed-building record.
It is in the directory because its own name calls it hidden.
Overture Maps carries this venue; OpenStreetMap has no matching record.
The source data classifies the premises as a lounge.