The most common and most likely answer to this crossword clue is the 8 letter word CAULDRON
I've seen this crossword clue in The Daily Telegraph
C
A
U
L
D
R
O
N
More clues leading to the result CAULDRON
- Steer around old Scottish river vessel
- Aged Scots in hag’s bottomless cooking pot?
- Place that’s seething about university lecturer, endlessly idle type
- Contacted a Weasley by phone for some Hogwarts equipment
- A potboiler?
- Right, could a gasman finally get to change boiler?
- Caught Weasley maybe, pinching old Scottish pot
- Cook’s vessel, in cloud, ran on the rocks
- A domestic potboiler?
- Source of heat in a cold run when struggling
Buddy explains!

The straight part
We know that "hot pot" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hot pot = cauldron.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does CAULDRON mean?
CAULDRON noun- A large bowl-shaped pot used for boiling over an open flame.