Hot soup and some cask ales on the counter (5)

I believe the answer is:

laksa

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'the counter' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.

'hot soup and some cask ales' is the wordplay.
'LAKSA' is hidden backwards within the letters.
But, I'm unsure how the hidden word is indicated.

'on' acts as a link.

Can you help me to learn more?

(Another definition for laksa that I've seen is " noodle dish".)

I've seen this clue in The Telegraph.

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