Code letter one has to eat perhaps (6)

I believe the answer is:

morsel

I'm a little stuck... Click here to teach me more about this clue!

'one has to eat perhaps' is the definition.
I can't tell whether this defines the answer.

'code letter' is the wordplay.
'code' becomes 'Morse' (Morse code).
'letter' becomes 'l' ().
'morse'+'l'='MORSEL'

Can you help me to learn more?

(Other definitions for morsel that I've seen before include "Part" , "Scrap, fragment" , "Small bit of food" , "Small mouthful of food" , "Small amount of food, a bite" .)

I've seen this clue in The Globe and Mail.

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