Blender speed (5)
(Other definitions for beat that I've seen before include "Overcome or hit repeatedly" , "course run regularly" , "Tan" , "Strike; pulsate" , "tired" .)
'blender speed' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for whip that I've seen before include "Cat-o'-nine-tails" , "He maintains discipline among members" , "Lash for driving animals" , "Lash - political disciplinarian" , "Party official; punish" .)
(Other definitions for puree that I've seen before include "Mash" , "Smooth cream of liquidized or crushed fruit or vegetables" , "Pulped fruit or vegetables" , "creamy mixture" , "Liquidise (vegetables etc)" .)