A mere bagatelle that seems somehow drinkable! (3,5)
I believe the answer is:
pin table
This clue might be a double definition.
'a mere' is the first definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'bagatelle that seems somehow drinkable' is the second definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
Can you help me to learn more?
(Other definitions for pin table that I've seen before include "Game with balls on a sloping surface" , "play bagatelle here" .)