New diet many find explosive (8)
I believe the answer is:
dynamite
'explosive' is the definition.
(I've seen this before)
'new diet many' is the wordplay.
'new' is an anagram indicator.
'diet'+'many'='dietmany'
'dietmany' anagrammed gives 'DYNAMITE'.
'find' is the link.
(Other definitions for dynamite that I've seen before include "Nobel's invention" , "an exciting thing" , "Nitroglycerine explosive" , "High explosive" , "Spectacular (or dangerous) person (or thing)" .)