Grub stake arranged (5)
I believe the answer is:
steak
'grub' is the definition.
The answer and definition 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 can't see?
'stake arranged' is the wordplay.
'arranged' is an anagram indicator.
'stake' anagrammed gives 'STEAK'.
Can you help me to learn more?
(Other definitions for steak that I've seen before include "Takes (anag.)" , "Porterhouse, perhaps?" , "Good beef" , "pale by the sound of it" , "Thick slice of meat" .)