Dine in a companionable atmosphere (3)

I believe the answer is:

eat

'dine' is the definition.
(eat a meal)

'in a companionable atmosphere' is the wordplay.
'in' says the answer is hidden in the clue.
'EAT' can be found hidden inside 'companionable atmosphere'.

(Other definitions for eat that I've seen before include "get stuck in" , "Break bread" , "Devour" , "Gobble up" , "Corrode" .)

I've seen this clue in the Evening Standard.

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