They make up a meal from different sources (7)
I believe the answer is:
courses
'they make up a meal' is the definition.
The definition suggests an adverb but the answer is not.
'different sources' is the wordplay.
'different' indicates anagramming the letters (letters placed in a different order).
'sources' with letters rearranged gives 'COURSES'.
'from' is the link.
Can you help me to learn more?
(Other definitions for courses that I've seen before include "Runs" , "Series of lessons" , "starters, perhaps" , "Separate dishes in meal" , "Directions or curricula" .)