Speech about the origin of hollandaise (5)
I believe the answer is:
sauce
'hollandaise' 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 an association between them I don't understand?
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for sauce that I've seen before include "It's good for the goose and gander" , "Dressing served with food" , "(Semi)liquid flavouring" , "Food accompaniment" , "Gravy" .)