Though angry, he'd be about to make fresh tea (6)
I believe the answer is:
heated
'though angry' is the definition.
'heated' can be an answer for 'angry' (I've seen this in another clue). I am not sure about the 'though' bit.
'he'd be about to make fresh tea' is the wordplay.
'be about' indicates putting letters inside.
'to make fresh' becomes 'ea' (I am not sure about this - if you are sure you should believe this answer much more).
'tea' becomes 't' (I've seen this in other clues).
'ea'+'t'='eat'
'hed' going around 'eat' is 'HEATED'.
Can you help me to learn more?
(Other definitions for heated that I've seen before include "Fired-up" , "fired" , "Brief extract" , "Raised the temperature" , "Made warm" .)