Stock nice and hot, apparently (7)
I believe the answer is:
kindred
'stock' is the definition.
(thesaurus)
'nice and hot apparently' is the wordplay.
I cannot quite understand how this works, but
'nice' could be 'kind' (nice can mean kind or generous) and 'kind' is located in the answer.
The remaining letters 'red' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for kindred that I've seen before include "Relatively" , "[TRIBAL]" , "Similarity in character" , "Family - like" , "Related by blood - having similar qualities" .)