Special delights that drive the taster wild (6)
I believe the answer is:
treats
'special delights that drive the' is the definition.
Although both the answer and 'special' are nouns, they are not in the same form of the noun.
'taster wild' is the wordplay.
'wild' indicates an anagram.
'taster' anagrammed gives 'TREATS'.
Can you help me to learn more?
(Other definitions for treats that I've seen before include "Stands a round, say." , "Gives medical care or pays the bill" , "Entertains at one's own expense" , "everyone likes them" , "Entertains with taters" .)