They will be less than the usual fare (6)
I believe the answer is:
snacks
'they' is the definition.
Both the definition and answer are plural nouns.
Perhaps they are linked in a way I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for snacks that I've seen before include "Nibbles" , "Small food amounts between main meals" , "Light bites such as crisps" , "Small or casual meals, often hurried" , "Light informal meals" .)