Can turn red, burning readily as it does! (6)
I believe the answer is:
tinder
'burning readily as it does' is the definition.
I can't tell whether this defines the answer.
'can turn red' is the wordplay.
'can' becomes 'tin' (both are metal containers).
'turn' indicates an anagram.
'red' with letters rearranged gives 'der'.
'tin'+'der'='TINDER'
Can you help me to learn more?
(Other definitions for tinder that I've seen before include "Dry material for starting fires" , "Dry firelighting material" , "It's used to start a fire" , "Dry stuff to light fire with" , "Dry stuff that fires easily" .)