Time to dine on mince (8)
I believe the answer is:
noontide
'time' is the definition.
(noontide is a kind of time)
'to dine on mince' is the wordplay.
'mince' indicates an anagram.
'to'+'dine'+'on'='todineon'
'todineon' with letters rearranged gives 'NOONTIDE'.
(Other definitions for noontide that I've seen before include "12" , "lunchtime? Certainly" , "Time" , "Midday" .)