Tell me again what's cooking in the hot container (4,4)
I believe the answer is:
hows that
'hot container' is the definition.
I know nothing about this answer so I can't judge whether this works.
'tell me again what's cooking in' is the wordplay.
'tell me again' becomes 'hot' (I can't justify this - if you can you should believe this answer much more).
'cooking' indicates an anagram (letters cooked up into a new form).
'in' is an insertion indicator.
'whats' is an anagram of 'wstha'.
'hot' going around 'wstha' is 'HOWS THAT'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for hows that that I've seen before include "Cricketing shout" , "Well?" , "Cricketing appeal" , "Bowler's cry" , "Cricket's appeal?" .)