I don't know precisely how long this has been an active and going beer, but it's been turning up on shelves around the San Francisco Bay Area of late, in both cans and bottles, and I certainly couldn't resist grabbing a can. Time was, BALLAST POINT's "SCULPIN" was considered one of the great big-daddy IPAs. For some, it still is. (I reviewed it back in 2009 here). Like anything that becomes extremely well-distributed, as Sculpin now is, well - it's easy to overlook when there are so many new giant IPAs and 2xIPAs to hunt down and conquer. I don't think I've had a Sculpin in at least two years. "Grapefruit Sculpin", however? Now you're talking.
Would you be at all surprised if I told you it's a total grapefruit bomb? I mean, like an already hoppy ale with a couple of grapefruits squeezed into it? Seriously, it's actually that simple. Unlike some big IPAs, which approximate the flavor of grapefruit via how they're hopped, this one approximates the flavor of holding a half a grapefruit up to your lips and tongue and then inhaling the juice, full-stop. Do you like that sort of thing? I do. I can't see that it's worth them packaging it into six-packs and selling them to the hoi polloi in the grocery store (I mean, it's a little esoteric, don't you think?), but they're doing it, which probably means the rabble are buying it. How about that. 8/10.