Pasta ... cut it in iron when cooked (9)
I believe the answer is:
fettucini
'pasta' is the definition.
(I've seen this before)
'cut it in iron when cooked' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'cut' is 'tuc' which is present in the answer.
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is found in the answer.
'in' is found in the answer.
'iron' could be 'fe' (Fe is the chemical symbol for iron) and 'fe' is found within the answer.
A single letter 'i' remains which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for fettucini that I've seen before include "Italian course" , "long ribbons" , "Ribbon pasta" , "Of gold" , "Ribbon-like pasta" .)