Some vegan ice-cream is quite pleasant (4)
I believe the answer is:
nice
'quite pleasant' is the definition.
(nice can mean pleasant or satisfactory)
'some vegan ice-cream' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'NICE' is hidden in the letters of 'vegan ice cream'.
'is' acts as a link.
(Other definitions for nice that I've seen before include "French Mediterranean resort" , "A pleasant French city? ( 4)" , "Pleasant city in south of France" , "Attractive Mediterranean resort" , "French seaport in SE - sounds pleasant" .)