Freezing some confectionery (5)
I believe the answer is:
icing
I believe this clue is a double definition.
'freezing' is the first definition.
(I know that icing is a type of freezing)
'some confectionery' is the second definition.
(thesaurus)
(Other definitions for icing that I've seen before include "The sweetest part of the cake" , "Concreted sugar" , "Sugary topping" , "Sweet cake topping" , "Cake-topper" .)