Glistened and nearly boiled, keeping hot (9)
I believe the answer is:
shimmered
'glistened' is the definition.
(shimmering is a kind of glistening)
'nearly boiled keeping hot' is the wordplay.
I cannot really understand how this works, but
'hot' could be 'h' (abbreviation eg on taps) and 'h' is located in the answer.
'boiled' could be 'simmered' (simmering is a kind of boiling) and 'simmered' is found within the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
'and' acts as a link.
Can you help me to learn more?
(Another definition for shimmered that I've seen is " shone".)