The waste salt solution, or brine, would then be deposited into the lough or the North Channel.

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Acetic acid in the vinegar delays stomach-emptying and acts as an antidiuretic, remaining in the hung-over body longer than water, and allowing it to rehydrate by absorbing salt and electrolytes in the brine.

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Droitwich Spa became the only salt water spa town in Britain when John Corbett created the first spa, St Andrew's Brine Baths, in 1887 as part of the Raven Hotel.

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