Drink container hogged by father mostly (7)
I believe the answer is:
thermos
'drink container' is the definition.
'thermos' can be an answer for 'container' (thermos is a kind of container). I'm not certain of the 'drink' bit.
'hogged by father mostly' is the wordplay.
'THERMOS' is hidden in amongst the letters.
But, I am unsure how this is indicated.
Can you help me to learn more?
(Other definitions for thermos that I've seen before include "Container to retain heat" , "Flask trade mark" , "Vacuum flask for mothers" , "Heat-retaining flask for mothers" .)