- Website
- cmnsl.co
- Address
- 3901 North Williams Avenue Unit A, Portland, Oregon, 97227
Commensal Fermentation is a veteran-owned brewery in Portland, Oregon, offering a diverse range of beers and hosting various events. The taproom features 14 taps, a small food menu, and an outdoor patio for visitors.
Vibe: welcoming neighborhood taproom
Good to know
- Taproom
- Food / kitchen
- Dog-friendly
- Patio / outdoor seating
- Events
About Commensal Fermentation
Commensal Fermentation stands out as a veteran and minority-owned brewery in the heart of Portland, Oregon. Founded by Michael Mathis alongside his long-time friends Morgan and Piotr, the brewery focuses on exploring different beer styles without boundaries. The taproom, located on N Williams Ave, offers 14 taps featuring their own brews and curated selections from natural wines to ciders. Visitors can enjoy a small food menu made in-house, order ahead for online pick-ups, or participate in regularly scheduled events. The outdoor patio is dog-friendly, making it an inviting spot for families and pet owners alike.
- Founded
- 2014 · Michael Mathis, Morgan, Piotr
- Hours
- Thurs: 4PM-8PM, Fri: 4PM-10PM, Sat: 2PM-10PM, Sun: 2PM-8PM (subject to change)
- Hours change; confirm with the brewery before visiting.
Highlights
- Veteran- and minority-owned
- 14 taps featuring diverse beer styles
- Dog-friendly outdoor patio
- Small food menu made in-house
- Regularly hosts events
Frequently asked questions
Does Commensal Fermentation have food?
Yes, the taproom offers a small food menu made in-house.
Is Commensal Fermentation dog-friendly?
Yes, dogs are welcome on the patio.
What styles does Commensal Fermentation brew?
The brewery focuses on exploring different beer styles without setting limits.
When did Commensal Fermentation open?
The exact founding year is not specified in the provided text.
Does Commensal Fermentation offer tours?
No, tours are not mentioned as an amenity on their website.






