(6/26: mystery solved. Greg Ouellette, the brewer at Martha's Exchange, gave them to me back in May when we met for drinks in Philly. Here's what he said on Facebook:
Lew. That's mine. Gave it to you at Triumph when I saw you in early May. Glad to see you enjoyed it. Not homebrew. but brewpub brew. 2 years in the making. Blended with a golden ale cuz the straight sour was waaay too sour. Cheers.)Very low blogging rate this week, I know. I've been working on a story for Mass Beverage Biz, doing Malt Advocate editing, and setting up Thomas's first college visit trip. Busy week. I'll try to squeeze a few more in before the end of the month.