I used Calypso last year when I did a bunch of single-hopped test batches. Here are my tasting notes (from this post
Next beer up was brewed with Calypso. These were 12.8% AA from AHS. The pellets had some tropical fruit aroma, along with a pungent herbal/earthy scent and a hint of tobacco. I also picked up a very distinct aroma that smells like fresh-picked tomatoes, or more specifically, like the smell of a tomato plant after you just snapped off a ripe tomato.
On the nose of the beer itself I get some aromas of tropical fruit (similar to coconut), some earthiness, and faint notes of onion/sulfur as well as cocoa butter.
On the palate there is a fleeting grapefruit/citrus flavor, but the main character is herbal/grassy with a resinous bitterness that really seems to cling on. Some earthy and spicy flavors are tucked away in the background as well. I did start to pick up an interesting cocoa flavor after a few sips that seemed to intensify as the beer warmed up a bit.
I have to admit, with a name like Calypso i was expecting something totally different from this hop. I was hoping for something that reminded me of sipping a Mai Tai, but this seems pretty meh overall. This had a really tongue-coating resinous bite, so maybe this could work as a bittering hop for an IPA. The cocoa flavor was kind of interesting. I could see this doing well as a late addition in a Robust Porter.