A spicy pastry is surely a samosa. I wasn't quite sure how a qualified as a 'term', however. Perhaps it's listed as such in the Chambers 2008, which I do not yet have. Alternatively, as K says, maybe a samosa is now also called a samos.
Whatever, I agree the answer is samos.
Hi K - I feel a complete duffer...fancy missing something so obvious!
I finally got round to watching the TV programme you recommended...the one about cryptic crosswords. Very enjoyable - Tim Moorey is as jolly as I had imagined him to be. I always enjoy his crosswords..... unless Greek pastries are involved.. :o)