LONDON — In Scotland, you can buy a 16th-century castle for a little more than a million dollars.

On Wednesday, someone paid a similar amount for a 750-milliliter bottle of single malt whisky described as “the Holy Grail” of the dark alcoholic spirit: just over $1.1 million, a record.

The 60-year-old Macallan Valerio Adami 1926 is “one of the rarest and most desirable bottles ever produced,” according to a specialist at Bonhams, the auction house in Scotland that made the sale. The price included a bid of 700,000 pounds, or about $900,000, plus a £148,000 sales premium.

The identity of the private buyer was not revealed. But a Bonhams spokesman said on Wednesday that the person was from Asia and had made the bid over the phone.

The bottle was put up for sale in Edinburgh, sitting atop a display stand covered in tartan and encased in a specially designed cabinet.