Cake shop is grappling with asperities (10)
I believe the answer is:
patisserie
'cake shop' is the definition.
(I've seen this before)
'grappling with asperities' is the wordplay.
'asperities' can be anagrammed to 'PATISSERIE'.
However, I am not sure how the anagram is indicated.
'is' is the link.
Can you help me to learn more?
(Other definitions for patisserie that I've seen before include "Its cakes are fancy" , "Tart collection" , "supplier of tarts" , "store for Brownies?" , "food shop" .)