Hi Mikey, Carastan is a Bairds Malt trade name and is a light crytal of around 70 EBC. Caramalt is the same animal and can be directly substituted. Used for building body and flavour in lagers.
Thanks Wes,
While looking for an answer I found a pretty good document, Beer101, someone has spent a bit of time preparing at
"Removed"
It has the usual American bias but otherwise OK.
Mikey, that link took me into spam world and also planted a tracking cookie in my registry - and I could not find the pdf file. Seems like there might be a problem with that site!