It's been a long time, as I became disenchanted with their "macro"-style, and I attempted to focus on smaller and more local brews. But, when I was at the liquor store and saw a sour from Sam Adams, I was interested.
And I was disappointed. The sour is minor and weak, and only in the back end. The description of the blending and aging process for this beer sounded really cool - sadly, the final product is nothing exciting.
So, the label says its blended with a beer called Kosmic Mother Funk (KMF) which I have also tried. It was Beer #736. Sadly, I didn't get the sour I wanted from it either. Perhaps Sam Adams doesn't understand the term "sour"?