What you'd find in the kitchen — Aga best for cooking? (3,4)
I believe the answer is:
tea bags
'what you'd find in the kitchen' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'aga best for cooking?' is the wordplay.
'for cooking?' is an anagram indicator (I've seen 'for cooking' mean this).
'aga'+'best'='agabest'
'agabest' with letters rearranged gives 'TEA-BAGS'.
Can you help me to learn more?
(Other definitions for tea bags that I've seen before include "those in hot water?" , "They hold leaves for infusions" .)