Booze thrown up, with European revealing stomach contents (5)

I believe the answer is:

gorge

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'stomach contents' is the definition.
The definition and answer can be both body parts as well as being singular nouns.
Perhaps you can see a link between them that I don't see?

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for gorge that I've seen before include "Steep raving (Cheddar)" , "something close to Cheddar?" , "Steep narrow ravine" , "Cheddar, perhaps" , "oesophagus" .)

I've seen this clue in The Independent.

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