Simple past tense and past participle of vat.(verb)
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Use "vatted" in a sentence
"Also known as a vatted malt, this type consists of a blend of single malts from different distilleries, with no grain whiskey."
"If you've ever wished you knew more about single malt Islay or what a vatted malt is or even why some Scotches are called "peated," call the Willard Hotel and see if you can book some time with bartender Jim Hewes at his tiny little Scotch Bar."
"Moeller would have rather roasted his own tongue on a skewer than eat vatted meat."