Bit of food a bishop gets in bed (6)
I believe the answer is:
carrot
'bit of food' is the definition.
'carrot' can be an answer for 'food' (carrot is a kind of food). I'm not certain of the 'bit of' bit.
'a bishop gets in bed' is the wordplay.
'bishop' becomes 'rr' (abbreviation for Right Reverend).
'gets in' is an insertion indicator.
'bed' becomes 'cot' (cot is a type of bed).
'a'+'rr'='arr'
'arr' going inside 'cot' is 'CARROT'.
Can you help me to learn more?
(Other definitions for carrot that I've seen before include "Orangey vegetable" , "orangey colour" , "Root vegetable" , "Tapering vegetable" , "Obstacle in race" .)