A yellow variety of the ghostly jalapeño, which was originally a cross of the ghost pepper and jalapeño pepper. Packing much more heat than a jalapeño, but less than a ghost this is a great tasting pepper and in my opinion is better than the standard red variety.
 
Description written by Baus. 
 
Watch him eat one here: https://www.youtube.com/watch?v=ZN071Uq5lRs