Hot port drink, say, consumed by rising star (5)
I believe the answer is:
negus
'hot port drink' is the definition.
'negus' can be an answer for 'drink' (negus is a kind of drink). I am not certain of the 'hot port' bit.
'say consumed by rising star' is the wordplay.
'say' becomes 'eg'.
'consumed by' indicates putting letters inside.
'rising' is a reversal indicator (going up in a down clue).
'star' becomes 'sun' (Sun is an example).
'sun' written backwards gives 'nus'.
'eg' put into 'nus' is 'NEGUS'.
Can you help me to learn more?
(Other definitions for negus that I've seen before include "Abyssinian king - hot, spicy drink" , "Ruler in Africa" , "Abyssinian king - spiced drink" , "Ethiopian emperor (hist.)" , "Hot spiced port drink" .)