Dip in case you start to stress out (3,5)
I believe the answer is:
soy sauce
'dip' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Maybe there's a link between them I don't understand?
'case you start to stress out' is the wordplay.
'start to' says to take the initial letters.
'out' indicates an anagram (out can mean wrong or inaccurate).
The first letter of 'stress' is 's'.
'case'+'you'+'s'='caseyous'
'caseyous' anagrammed gives 'SOY SAUCE'.
'in' is the link.
Can you help me to learn more?
(Other definitions for soy sauce that I've seen before include "Ingredient in Chinese" , "addition to a meal" , "Condiment" , "Eastern cooking ingredient" , "Staple of eastern cooking" .)