Would it provide stock for alphabet soup?
I believe the answer is:
aitchbone
'soup?' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Maybe you can see a link between them that I don't see?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for aitchbone that I've seen before include "Cut of meat" , "cut of beef" .)