Perfectly correct in putting this pot on high heat (4,2)
I believe the answer is:
spot on
'perfectly correct' is the definition.
'spot on' can be an answer for 'correct' (I've seen this before). I am unsure of the 'perfectly' bit.
'putting this pot on high heat' is the wordplay.
I cannot really see how this works, but
'on' is found in the answer.
'this pot' could be 'pot' and 'pot' is located in the answer.
A single letter 's' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
'in' acts as a link.
Can you help me to learn more?
(Other definitions for spot on that I've seen before include "Quite right" , "What the leading actor may have" , "Absolutely right" , "Precise" , "Totally true" .)