Pizzeria hot spot (4)
I believe the answer is:
oven
'pizzeria hot spot' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for oven that I've seen before include "It may get very hot" , "Kiln, perhaps" , "Kitchen appliance" , "Kiln, cooker" , "Chamber for baking" .)