It’s tough to do lambic well, even tougher when you’re not actually located in Belgium. So I’ll give Sam Adams props for trying. And, they were brewing this beer as early as 1990, largely before the notion of "lambic" was even in the American consciousness.
This was one of the beers that came in their seasonal holiday pack; all of the others I rather liked (particularly the Black Lager), but this one, while not undrinkable, is certainly not a lambic. It’s different.
Appearance: Very clear, golden honey color. Rising bubbles remind me of champagne, though there’s not much of a head.
Smell: Sour cranberries. Almost a musty fruit. Hint of wheat; lactic sour dominates.
Taste: Definitely character of musty—almost moldy—berries. Slight sweet over the sour… could be maple. Neutral wheat. Not bad as a standalone cranberry ale, but definitely not a lambic.
Mouthfeel: Light, like a cider… bubbly. Odd feeling from musty character.