it’s made for Costco by different breweries in different parts of the country. for the Midwest it’s made down here in southern WI at Minhas Brewery in Monroe. since Kirkland doesn’t have their own beer recipe for Minhas to follow, it could very well be a Minhas beer that’s just relabeled for Kirkland.
lots and lots of beer comes off that line, and not very much of it is good – they all kind of taste the same. an ice cold Lazy Mutt is a pretty good farmhouse ale on a hot summer day though.
that said, it’s a very interesting place, and worth taking a tour. 2nd oldest continuously operating brewery in the country (behind Yuengling) and 10th biggest. it was Huber before the Minhas family from Canada bought it. they installed an absolutely massive packaging line in order to increase production for both their own beers and lots of contract brewing. Minhas/Lazy Mutt, Kirkland, Boxer, Mountain Crest/Creek, Rhinelander, Huber, Blumer’s soda, and recently added a big distillery/liquor packaging line across the street as well.