American Single Malt
American single malt has been a legal category since January 2025. Before that it was a trade term anybody could use, which is where wheated bourbon and high rye still sit today. The rules are short, stricter than you would guess in one place and looser than Scotch in another. Here they are.
1 bottles match
What the law actually requires
The federal standard took effect in January 2025. To be labelled American single malt whisky, a bottle has to be:
- made from a mash of 100% malted barley and nothing else
- distilled entirely at one US distillery
- distilled to no more than 160 proof
- aged in oak barrels of 700 litres or less
- mashed, distilled and aged in the United States
- bottled at 80 proof or more
Caramel colouring is allowed, but only if the label says so. The word straight may be used after two years in wood.
The thing most people get wrong
Single does not mean one barrel. It means one distillery.
That matters more here than it would in most shops, because the rest of this site is built on single barrels and the two phrases look like they describe the same idea. They do not. A single malt can be a marriage of fifty casks, so long as every one of them came from the same distillery and held nothing but malted barley.
So a bottle can be a single malt and a single barrel, a single malt and not a single barrel, or a single barrel and not a single malt. All three are common. Where a bottle is both, we say so on the product page.
Where it is looser than Scotch
Scotch must spend three years in oak. American single malt has no minimum age at all. Only the word straight carries a time requirement, and that is two years.
That is the one place the American standard gives more ground than the Scottish one, and it is the reason to read the age rather than the category name. A young American single malt is legal, common and sometimes very good. It is also sometimes a two-year-old whiskey being sold on the strength of a category.
Where it is stricter
Barrels, in a way that changes the taste rather than the paperwork. Scotch is almost always matured in used casks, by convention and economics rather than by rule. The American standard spells out that used, new uncharred and new charred oak are all permitted, so a distiller can put malted barley into a fresh charred barrel.
That is the most useful thing to know about the category. It is not American Scotch. The grain is the same and the wood is not, and a new charred barrel gives malted barley the vanilla and caramel a bourbon drinker would recognise immediately.
Shopping this page
Read the age first, then the barrel, then the proof. The category name is the least informative thing on the label.
If you want one cask rather than one distillery, the [single barrels](/collections/all-single-barrels) are that. If the charred-oak end of this appeals, the [bourbon shelf](/collections/bourbon) is the same wood on a different grain, and [Scotch](/collections/scotch) is the same grain in different wood.
What is American single malt whiskey?
Since January 2025 it is a defined federal category: a mash of 100% malted barley, distilled entirely at one US distillery to no more than 160 proof, aged in oak of 700 litres or less, mashed and distilled and aged in the United States, and bottled at 80 proof or above. Before 2025 the phrase had no legal meaning at all.
Does single malt mean single barrel?
No, and it is the most common confusion in whiskey. Single refers to a single distillery, not a single cask. A single malt can be a marriage of dozens of barrels as long as they all came from one distillery and all held malted barley. A single barrel is one cask bottled on its own, which is a different claim entirely.
How is American single malt different from Scotch?
The grain is the same and the wood usually is not. Scotch is nearly always matured in used casks; the American standard explicitly permits new charred oak, which gives malted barley the vanilla and caramel sweetness associated with bourbon. Scotch also requires three years in wood and American single malt requires no minimum age.
Does American single malt have a minimum age?
No. There is no minimum age in the standard. Only the word straight carries one, at two years. So the age statement does more work on these bottles than the category name does, and a bottle with no age statement is worth asking about rather than assuming.
Is American single malt the same as malt whiskey?
No. US rules define malt whiskey as at least 51% malted barley, which leaves up to 49% of the mash as something else. American single malt requires 100% malted barley and one distillery. Malt whiskey is the wider category and single malt is the stricter one inside it.
Can American single malt be coloured?
Caramel colouring is permitted, and if it is used the label has to disclose it. That is a meaningful piece of consumer protection written into a brand new standard, and it means an undisclosed colour addition would be a labelling violation rather than a judgement call.