Telling cooks to produce fishing gear (4,3)

I believe the answer is:
gill net
'fishing gear' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Maybe there's an association between them I don't understand?
'telling cooks' is the wordplay.
'cooks' indicates anagramming the letters.
'telling' is an anagram of 'GILL-NET'.
'to produce' acts as a link.
Can you help me to learn more?
(Another definition for gill net that I've seen is " Where some swimmers may get caught".)
