In spring, say, add some spice (6)
I believe the answer is:
season
'some spice' is the definition.
(I've seen this in another clue)
'in spring say add' is the wordplay.
I cannot quite see how this works, but
'say' could be 'as' (I've seen this in other clues) and 'as' is found in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for season that I've seen before include "such as 'Summertime'" , "Period of a year" , "Time of 9" , "Quarter of the year" , "Eg, summer" .)