Pasta: large helping beyond comprehension, ultimately (7)
I believe the answer is:
noodles
'pasta' is the definition.
(I know that noodles is a type of pasta)
'large helping beyond comprehension ultimately' is the wordplay.
'large helping' becomes 'oodles' (I can't justify this - if you can you should give a lot more credence to this answer).
'beyond' is a charade indicator (letters next to each other).
'ultimately' suggests the final letters.
The final letter of 'comprehension' is 'n'.
'oodles' after 'n' is 'NOODLES'.
Can you help me to learn more?
(Other definitions for noodles that I've seen before include "Narrow strips of pasta, or slang heads" , "On instrument casually plays" , "Egg pasta; simpletons" , "Strips of pasta for soup" , "Thin strips of pasta for old ones" .)