On which to have a potato in comfort? (5)
I believe the answer is:
couch
'comfort?' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for couch that I've seen before include "Long seat; grass" , "Grass; reclining seat" , "Upholstered seat for more than one" , "something comfortable to sit on" , "express" .)