Pour hot fat over shivering beast (5)
I believe the answer is:
baste
'pour hot fat over' is the definition.
(I've seen this before)
'shivering beast' is the wordplay.
'shivering' indicates an anagram.
'beast' with letters rearranged gives 'BASTE'.
(Other definitions for baste that I've seen before include "Pour hot cooking juices over" , "Sew" , "Looking at with interest" , "Beat" , "strike" .)