Knitting Factory era

In 1986, at the age of 23, Dorf started the Knitting Factory in the East Village.^[3] The Knitting Factory later became a widely known club for jazz and rock music. A spin-off entertainment company, KnitMedia, eventually established Knitting Factory Records.^[4]

KnitMedia promoted a number of music festivals, including the What is Jazz Festival.^[5]

In 1996, Dorf founded the Digital Club Network with partner Andrew Rasiej. During this time they also started the Macintosh Music Festival which became one of the first live-streaming concert events.^[6] In 1998 they had 250,000 users watching the concert live.^[7] The business grew and was eventually acquired by eMusic Group. 2002 was a tough year for the Knitting Factory following the September 11 attacks, resulting in a significant reduction of staff. By 2003 Dorf had diluted himself out of a controlling position in the company.^[8]

Post Knitting Factory

Dorf started Tribeca Hebrew as an after-school program for his two boys and several other friends. In 2004, he rented a small storefront in Tribeca and brought in other families to help fund the school, which quickly grew to 120 kids under his leadership as the chairman in the first two years. In 2009, the school merged with JCP.^[9]

City Winery

In 2008, Dorf started City Winery.^[10] on June 4, 2017, MSNBC reported that the company generated over $1 million in profits.^[11]

Since City Winery's inception in 2008, Dorf has expanded the company to five cities which include New York, Chicago, Nashville, Atlanta, and Boston.^[12] While City Winery is a concert venue as well as a restaurant, it is also a fully functioning winery, with its New York City location producing around 9,000 cases of wine a year.^[13] City Winery has not been without its missteps, with a failure of its Napa Valley location, which Dorf attributed to Napa's lack of urban environment central to the City Winery theme.^[14] However, in 2018 he made a deal to purchase the Montgomery Worsted Mills building in Montgomery, New York, in a rural area of Orange County, and turn it into another location.^[15]

Besides City Winery, Dorf has also opened another restaurant in New York City called City Vineyard. While City Vineyard at Pier 26 has ties to City Winery, it's a stand-alone restaurant that does not make wine like its sibling restaurants.^[16] City Winery is similar to its predecessor, Riverwalk in Chicago, which is also tied to City Winery.^[17]

In September 2017 City Winery signed a 5-year lease extension on its original 155 Varick St.NYC location, a deal which included a $2m renovation of the upper floor into a new venue 'The Loft', which opened in May 2018.^[18] In July 2018, just as renovations were finished, the landlord Trinity Church announced they had leased the entire block to the Walt Disney Company for redevelopment. and that City Winery was to be evicted via a "demolition clause" in the lease.^[19] On July 28, 2019, the New York Daily News published a lengthy op-ed by Dorf casting the story as a cautionary tale, but also mentioning a forthcoming move to a "sparkling new 32,000-square-foot City Winery at Pier 57 at Hudson River Park early next year.".^[20] The Varick St location closed on July 31, 2019.