LOTS of info below, about de colgar ones, so called longkeepers and much much more.
https://www.google.com/search?q=de+c...&bih=815&dpr=1
Usually I say I hope the above will help, but on this topic I know the above WILL help.
One of the things I want to do before I leave Tville is to do a sticky about how to search for info about almost an anything one can grow. And I always START my search here at Tville since there's a tremendous amount of info here going back to Jan of 2006 when Mischka first put up this site.
Carolyn, and yes I do know a lot about de colgar ones, etc,thanks to both Paco(Ilex) in Spain and Vladimir who has had a special interest in the area. And have offered them here at Tville,especially the ones from Paco
Next thing I have to do sometime is to find the pictures of de Colgar ones hanging from the rafters while ripening up.