Those opening some exceptionally tasty plonk (3)

I believe the answer is:
set
'plonk' is the definition.
The answer and definition can be both to do with contact as well as being verbs in their base form.
Maybe they are linked in a way I don't understand?
'those opening some exceptionally tasty' is the wordplay.
'those opening' says to take the initial letters (the letters which begin or open the words).
The first letters of 'some exceptionally tasty' is 'SET'.
Can you help me to learn more?
(Other definitions for set that I've seen before include "'Put, place or fix in position (3)'" , "Solidify like jelly" , "Put down the tennis group" , "Major division of tennis match" , "Put down the group of games" .)
