Just a quarter of the time (6)
I believe the answer is:
season
'the time' is the definition.
(I've seen this before)
'just a quarter' is the wordplay.
I cannot really understand how this works, but
'a' is present in the answer.
'quarter' could be 'se' and 'se' is located in the answer.
The remaining letters 'son' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'of' is the link.
Can you help me to learn more?
(Other definitions for season that I've seen before include "Salt, maybe" , "One of four periods" , "Add salt, pepper, spice etc" , "instruction in recipe" , "Add flavour with salt and pepper" .)