Jack's Stir Brew Coffee
Coffee · 5+ locations · NYC, Amagansett NY, Sag Harbor NY
Jack's Stir Brew has sold organic, fair-trade coffee since 2003, made in a stirring brewer it patented in 2006. Founder Jack Mazzola stepped back in 2020, and in 2022 investment firm Feenix Venture Partners, already its majority owner, merged the chain with a wine bar business.
The Big Picture
Jack's Stir Brew opened on West 10th Street in 2003 as an organic, fair-trade coffee shop. Founder Jack Mazzola stepped back in 2020, and in 2022 its majority owner, New York investment firm Feenix Venture Partners, merged it with the Vin Sur Vingt wine bars. The cafés still carry Jack's name, but the company answers to Feenix, not its founder.
The Dirty Details
Ownership
Feenix Venture PartnersPrivate Equity
Feenix Venture Partners is a New York investment firm founded in 2017 that provides growth capital to small and mid-sized consumer businesses through both debt and equity; its wider portfolio includes The Slanted Door and Capital Tacos. Its three Ferret companies show the range of what that can mean: already the majority owner of Jack's Stir Brew by the time it led that chain's 2022 merger, a lender to Bareburger whose 2018 loan never converted, and an investor in OddFellows on undisclosed terms. The label on the check matters less than whether control ever changes hands.
See all Feenix Venture Partners companies on FerretWhat do these scores mean? Learn more.
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Company data last updated September 2026
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