Revolting short story about old sources of nourishment
I believe the answer is:
roots
'sources of nourishment' is the definition.
'roots' can be an answer for 'sources' ('root' can be a synonym of 'source'). I'm not certain of the 'of nourishment' bit.
'revolting short story about old' is the wordplay.
'revolting' says the letters should be written backwards.
'short' means to remove the last letter.
'about' means one lot of letters goes inside another.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'story' with its final letter removed is 'stor'.
'stor' going around 'o' is 'stoor'.
'stoor' reversed gives 'ROOTS'.
Can you help me to learn more?
(Other definitions for roots that I've seen before include "(Family) origins" , "a Wesker play" , "background" , "Sources, rummages" , "Origins; cheers (for)" .)