I gew these a few years ago and would agree that they have a grapefruit like flavor. They did seem to be more flavorful when picked green rather than red. They make a great pepper flake.
Tim

This was my first year to grow them and agree with the comments by Beth and t-bones. They're very good in stir fry also. I saved seed and plan to grow them again next summer.
John A

I also grew Aji Crystal this year. It's really tasty and definitely has a slight grapefruit flavor. And, yes I agree that they are more flavorful when picked green-yellow thn when picked fully ripe. Great back of throat heat that quickly dissipates and leaves a nice sweet after taste.

I harvested about 90 pods from 1 plant this year. There would have been many more if I picked them all while green, but I wanted to save a lot for seed so I let quite a few mature. There aren't many seeds in the pods. I saved some, so email me if you'd like me to send you a packet.

Here is a link that might be useful: PEPPERMEISTER! Hot pepper gardening, recipes, and chile info.

Excuse me Peppermeister, I don't mean to butt in, but if you have any extra aji crystal seeds, I would love to trade you some or just let me know if you are looking for anything in particular. Thanks.

-Preston

Cool, click on "My Page" and email me a list of seeds you have. I'd love to trade.

Here is a link that might be useful: PEPPERMEISTER! Hot pepper gardening, recipes, and chile info.

Sent an email Peppermeister.

Hey Peppermeister,

Thanks for the input and for the seed offer, but let someone else have them, I'm going to order plants for 2013.

From reviews I've read Birgit's Locoto sounds very similar to Aji Crystal.

Can anyone give a good comparison of the two?

Thanks,

Larry

Here is a link that might be useful: Birgit's Locoto

Birgit's Locoto are larger and fatter, obviously. They turn red much faster. Aji Crystal stays yellow a long time before gradually turning orange, and is about done by the time it gets red. The flavor is not so good at that point.

No worries Sid, glad you are going to try it. CCN has great plants, I've had great experiences with them.

Rick in va: You're right on, the Aji Crystal takes a really long time to turn red, the only reason you would wait is for seed harvesting since the flavor is unimpressive at that point.

Here is a link that might be useful: Peppermeister's 2012 Seed giveaway.

rick in va - "...Aji Crystal stays yellow a long time before gradually turning orange, and is about done by the time it gets red. The flavor is not so good at that point."

Hey rick, have you pickled the green/yellow ones?

Of course!