Single malt whisky Single malt whisky Single malt whisky is malt whisky from a single distillery, that is, whisky distilled from a fermented mash made with malted barley, as distinguished from unmalted grain. Single malts are typically associated with single malt Scotch, though they are also produced in various other countries. Under Scotch Whisky Regulations, a "Single Malt Scotch Whisky" must be made exclusively from malted barley (although the addition of E150A caramel colouring is allowed), must be distilled using pot stills at a single distillery, and must be aged for at least three years in oak casks of a capacity not exceeding
Barbera d'Asti has been possible to produce "Barbera d'Asti Superiore", for which the wine must have an alcoholic strength of at least 12.5% by volume, and be aged for at least 14 months, 6 months of which stored in oak or chestnut barrels. Many "superiore" producers refine it in small oak barriques to obtain a rounder taste. The "superiore" has the following sub-zones indicated on the label: "Nizza", "Tinella", or "Colli Astiani" ("Asti"). The "superiore" wine has a strong additional aging potential; it can often be aged from ten to twenty years. The Nizza DOCG was added to Asti's Barbera portfolio in