The ever-expanding Carlsberg Corporation? (4,3)

I believe the answer is:

beer gut

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'corporation?' is the definition.
(I have seen 'large corporation' mean 'beer gut' so perhaps 'corporation' could also mean 'beer gut')

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Another definition for beer gut that I've seen is " large corporation".)

I've seen this clue in The Telegraph.

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