Mountaineer, utterly upset, grabs container of soup (6)
I believe the answer is:
tureen
'container of soup' is the definition.
'tureen' can be an answer for 'container' (tureen is a kind of container). I am not certain of the 'of soup' bit.
'mountaineer utterly upset grabs' is the wordplay.
'TUREEN' is hidden back-to-front in amongst the letters.
But, I'm uncertain how this is indicated.
Can you help me to learn more?
(Other definitions for tureen that I've seen before include "Soup-dish" , "Soup vessel" , "basin" , "A large covered dish for serving soup" , "Deep bowl for serving soup" .)