Rim on jar continually leaking latest booze from Spain (5)

I believe the answer is:

rioja

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'booze from spain' is the definition.
The definition and answer can be both things that one consumes for nourishment as well as being singular nouns.
Perhaps you can see a link between them that I can't see?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for rioja that I've seen before include "Spanish drink" , "Dry red wine from Spain" , "Wine from northern Spain" , "Popular Spanish wine" , "Spanish table wine" .)

I've seen this clue in The Telegraph.

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