Thanks a million.
I understand Coke, Rollerblades and Kleenex that are actually trademarks, the same is in the case of e.g Xerox.
I dug a little deeper (All my reference comes from Oxford Dictionaries Online).
with a capital P
and an e
after the m
(it is named after the Italian city of Parma
(also béchamel sauce)Although being derived from a proper name, béchamel is not capitalised. Why?
named after the Marquis Louis de Béchamel (died 1703), steward to Louis XIV of France, who is said to have invented a similar sauce
And what to do if 'pecorino' doesn't need capitalisation, but Romano does? Should I capitalise both?
I thought could be saved by some kind of a general rule but it's obvious now that I have to check every case separately.