Pick flavoursome apple that's warmer (8,6)
I believe the answer is:
electric heater
'warmer' is the definition.
(electric heater is a kind of warmer)
'pick flavoursome apple' is the wordplay.
'pick' becomes 'elect' (I've seen this in another clue).
'flavoursome' becomes 'rich' (having a rich flavour).
'apple' becomes 'eater' (I've seen this before).
'elect'+'rich'+'eater'='ELECTRIC HEATER'
'that's' is the link.
(Other definitions for electric heater that I've seen before include "Bar fire, say" , "Household appliance" .)