Meat starter is not cooked, on reflection - it's just been heated a little (4)
I believe the answer is:
warm
'just been heated a little' is the definition.
I can't tell whether this definition defines the answer.
'meat starter is not cooked on reflection' is the wordplay.
'starter' suggests taking the first letters.
'is not cooked' becomes 'raw' ('raw' is the opposite to 'cooked').
'on reflection' shows that the letters should be reversed in order.
The initial letter of 'meat' is 'm'.
'm'+'raw'='mraw'
'mraw' in reverse letter order is 'WARM'.
'it's' acts as a link.
Can you help me to learn more?
(Other definitions for warm that I've seen before include "Slightly hot" , "Near to finding hidden object" , "Affectionate; quite hot" , "Intimate - with a comfortable temperature" , "Heated; enthusiastic" .)