Jackie O's

Jackie O's was very helpful when it came to answering questions. They were extremely friendly and very open about their process. I haven't tried any of their stuff yet, but a friend said they make some really tasty brews. He recommended Mystic Mama IPA.

They make a ton of flavored beers and beers aged in wine casks. They never add actual wine to any beer. It seems like these are only used for their sour ales though and they are used in a separate room of the brewery even.

Regarding additives, here is what they said:

"The only beers we brew that use animal products are those which contain lactose sugar. Those specific brands are: Bourbon Barrel Black Maple, Cool Beans, and Java the Stout. After processing these beers, all tanks and equipment are thoroughly cleaned and sanitized. Outside of that and honey, no other animal or insect based products are used in our beer."

They do add unpasteurized and unfiltered honey to their brown ale. Unpasteurized honey is usually considered fine, but since it's unfiltered, I'm not sure what the kashrut status of the honey would be.

Based on the information from them, their unflavored beer should be acceptable by Star K standards.