TV cop show Lewis has cool content (5)
I believe the answer is:
chips
'tv cop show' is the definition.
(I've seen this in another clue)
'lewis has cool content' is the wordplay.
'lewis has' becomes 'cs' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'cool' becomes 'hip' (hip can mean cool or fashionable).
'content' is an insertion indicator (some letters act as content for another word).
'cs' going around 'hip' is 'CHIPS'.
Can you help me to learn more?
(Other definitions for chips that I've seen before include "Gambling tokens" , "Potato pieces fried in deep fat" , "Fries; golf shots" , "fast food?" , "Gambling counters" .)