Through an ancient process known as "quadruple distilling," a distillery on the west island of Islay in Scotland hopes to make a scotch that will be 92 per cent alcohol.

From the BBC story:

Bruichladdich believes it will be akin to a drink described 300 years ago by travel writer, Martin Martin.

Managing Director Mark Reynier said the distillery was doing it as a bit of fun and it was unlikely to be repeated.

Tasting note

He said: "We are doing this because we have this ancient recipe and therefore we can.

"It is unlikely that we will ever produce any more quadruple distilled malt again, so we expect it to become much sought after."

In his 1695 travel book, The Western Islands of Scotland, Martin Martin refers to a quadruple distilled whisky known as "usquebaugh-baul" and wrote what is probably the world's oldest whisky tasting note.

He said: "The first taste affects all the members of the body: two spoonfuls of this last liquor is a sufficient dose; and if any man should exceed this, it would presently stop his breath, and endanger his life."