From their FAQ (http://surlybrewing.com/contact/#faqs pulled June 2015):
"Yes, our beers are vegan friendly. We stopped performing animal sacrifices years ago. But seriously, we don’t use any animal products in the processing of our beer."
From a video interview, December 2011 (http://vimeo.com/33664147) 12:45:
"We just purchased a centrifuge... we're no longer fining our beer, so Surly is officially vegan"
Company email (2008):
yup,
we use the fish.
Email 2 (2008):
Our beers are made with isinglass.
Surly Brewing Company
Vegan
All 36 products listed are vegan friendly.
Products (36)
- Surly 1349 Black Ale Vegan
- Surly 1349 Pale Ale Vegan
- Surly Abrasive Ale Vegan
- Surly Asator Viking IPA Vegan
- Surly Bender Vegan
- Surly Bitter Brewer Vegan
- Surly BLAKKR Vegan
- Surly Cacao Bender Vegan
- Surly Coffee Bender Vegan
- Surly Cultivate Vegan
- Surly CynicAle Vegan
- Surly Damien Vegan
- Surly Dampfbier Vegan
- Surly Darkness Vegan
- Surly Devil's Work Vegan
- Surly Doomtree Vegan
- Surly Dumpster Fire Vegan
- Surly Eight Vegan
- Surly El Hefe Negro Vegan
- Surly Fiery Hell Vegan
- Surly Furious Vegan
- Surly Hell Vegan
- Surly Long of Tooth Vegan
- Surly Mild Vegan
- Surly Misanthrope Vegan
- Surly Mole Smoke Vegan
- Surly Overrated Vegan
- Surly Pentagram Vegan
- Surly Schadenfreude Vegan
- Surly Simpsons Scottish Ale Vegan
- Surly Smoke Vegan
- Surly SurlyFest Vegan
- Surly Todd The Axe Man Vegan
- Surly WET Vegan
- Surly Witch's Tower Vegan
- Surly You're In Trouble Vegan
What the company told us
Correspondence on record, with the date of each entry.