A cider bar serves ciders, such as apple cider and pear cider. “Cider bar and lunch counter” ws cited in print in 1906. During the Prohibition (1920-1933) in the United States, cider bars were operated in several states.
 
Ace Cider claims to have operated the first modern coder-centered pub in the United States in 1999, when it opened one in Sonoma County, California. Wassail (162 Orchard Street in Manhattan) planned a 2015 opening and claimed to be New York City’s first cider bar.
   
 
Wikipedia: Ace Cider
Ace Cider is a company and brand name used by California Cider Company, Inc., of Sebastopol, California. California Cider was founded by Jeffrey House and formally incorporated in July 1993. The company makes “hard cider,” an alcoholic beverage fermented from apples, and was one of the first hard cider companies formed in the US after the end of Prohibition. Ace Cider also opened the first modern cider-centered pub in the US in 1999. While the pub closed in 2010, the company maintains a cider tasting room on its premises. Mr. House located his business in the Sonoma County historic apple growing region because it reminded him of his native England.
   
Google Books
February 1906, The Wide World Magazine, “A Day and Night at Cobalt (Ontario)” by E. S. Valentine, pg. 401, col. 1:
The upshot was, being wearied, we paid him two days’ ground-rent in advance, and we saw him heading straight for the cider bar and lunch counter.
 
2 May 1922, Seattle (WA) Daily Times, pg. 8, col. 2:
Man Held on Robbery Charge.
Police last night arrested John Stark, 51 years old, at the Puget Sound Hotel, Sixth Avenue and Lane Street, on complaint of Matt Hill, who alleged that Stark robbed him of $40 the night before in a cider bar.
 
7 November 1924, Hemet (CA)

, “Fig Doings For Armistice Day,” pg. 7 col. 6:
The pop and cider bar did a business worthy of the wildest wild-west days and the liquors were completely cleaned before the evening was through.
     
22 November 1925, Morning Advocate (Baton Rouge, LA), pg. 12, col. 1:
Whisky Voice Comes to Rescue of Cider Bar
Crowds Buy Drinks; Red-Nosed Tenor Sings
Seattle, Wash., Nov. 20.—Collaboration between an imaginative soft drink parlor owner and a reformed saloon-addict has invented a new profession, given easy work to a dozen men and threatens to turn root beer and sarsaparilla dens into gold mines here.
 
12 December 1967, Milwaukee (WI) Journal, pg. 30, col. 4 ad:
Cold days ahead! Enjoy a delicious cup of HOT CIDER at our Cider Bar, Downtown, Street Floor. Just 10c a warming cup.
(Boston Store.—ed.)
 
Google Books
On the Trail of God
By William Proctor
Garden City, NY: Doubleday
1977
Pg. 2:
At age nine, I was siphoning off barrels of cider to supply two hookers, two prostitutes, who ran a little cider bar in New York.
   
Google Books
Australia:
A Travel Survival Kit
By Tony Wheeler
South Yarra, Vic., Australia; Berkeley, CA, USA: Lonely Planet
1986
Pg. 436:
It’s in Church St, is open daily for inspection and features a cider bar and craft shop.
 
Google Books
Spain ‘97:
The Complete Guide Including Majorca, the Canary Islands and Morocco
By Fodor’s
New York, NY: D. McKay
1996
Pg. 138:
The dining room and garden cider bar are popular with locals.
 
Google News Archive
1 September 1999, Wilmington (NC) Star-News, “First U.S. cider bar opens in wine country” by Charles Perry (Los Angeles Times News Service), pg. 3D, col. 1:
In on-sale liquor retailing news, Ace Cider has opened the first cidery (cider bar) in the United States. The Ace in the Hole is located at the Ace cider mill in Sonoma County, in Northern California’s wine country. In addition to the usual apple and pear hard ciders, it will serve specialty ciders including a mango cider and the traditional Devonshire unfiltered cider called scrumpy.
 
Twitter
Spain in USA
‏@SpainInUSA
Apple cider season is in full swing in #Spain! Have you ever been to a cider bar? No? Add that to your bucket list! http://bit.ly/1Ep42Yy
4:00 PM - 3 Feb 2015
     
New York magazine—Grub Street
February 9, 2015 9:15 a.m.
The LES Will Get a Fantastic-Sounding All-Cider Bar Next Month
By Sierra Tishgart Follow @SierraTishgart
The team behind Queens Kickshaw — the grilled-cheese destination in Astoria — is almost ready to expand with an entirely different concept: a bar and restaurant called Wassail, at 162 Orchard Street. The name is a reference to the winter ritual of blessing apple trees with cider to ward off evil spirits, so, naturally, the house speciality is excellent hard cider sourced from all over the world.
   
Eater—New York
All About Wassail, New York’s First Cider Bar, Opening Next Month
by Layla Khabiri Feb 26, 2015, 4:26p @LaylaKhabiri
Wassail
162 Orchard St, New York, NY 10002
(646) 918-6835
The team behind Queens Kickshaw is getting into the cider business.
Jennifer Lim and Ben Sandler are the husband and wife team behind Queens Kickshaw, the Astoria cafe loved by locals for its grilled cheese and great coffee. It’s also known for its impressive cider list, so it makes sense that the duo’s next venture, Wassail, will be New York’s first dedicated cider bar. Eater talked with Lim and Sandler recently, to hear more about Wassail, which is set to open in the next three or four weeks on the Lower East Side. Read on for details about the cider they will offer, the difficulties of turning a profit in the restaurant business, and much more:
 
How did you get interested in cider?
Ben Sandler: After our first Cider Week, we started to live and breath cider. The interest in it is palpable — it’s a new beverage category that everyone’s interested in, and it’s truly an agricultural product that screams “place.” It’s also an expression of season. We really felt a strong connection to it, especially after meeting some local cider makers like Elizabeth Ryan from Breezy Hill and the French ones from Le Perche—that really turned us on to the world of cider. Before that we’d only ever tried one French cider.
 
Twitter
Mary Ellen Wright
‏@MWrightLNP
The latest NYC concept watering hole? Cider Bar.
http://ny.eater.com/2015/2/26/8116121/wassail-owners-discuss-the-opening-of-new-yorks-first-cider-bar … @WassailNYC #cider
9:02 PM - 26 Feb 2015