Edible part of some lettuces in the US (6)
I believe the answer is:
omelet
'edible' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'part of some lettuces in the us' is the wordplay.
'part of' means one lot of letters goes inside another.
'some lettuces in' becomes 'ole' (I can't justify this - if you can you should believe this answer much more).
'the' becomes 't' (the is pronounced as a 't' sound in some dialects).
'us' becomes 'me' ('us' can mean 'mean' in some UK dialects).
'ole'+'t'='olet'
'olet' enclosing 'me' is 'OMELET'.
Can you help me to learn more?
(Other definitions for omelet that I've seen before include "Egg dish" , "American food" , "Light meal" .)