Yes. Pure distilled gin is gluten free, even when it is made from wheat, barley or rye. Gluten is a protein, and protein does not make it through a still: it is far too heavy to boil off with the alcohol, so it stays behind in the pot with the spent grain. The US Food and Drug Administration said so plainly in its 2020 rule on gluten-free labeling: if good manufacturing practices are followed, distillation "must remove all protein (and thus gluten), regardless if the product has been distilled from gluten-containing grains."
Where gluten can find its way back in is after the still. Flavored and pink gins, sloe gin and other gin liqueurs, and some canned cocktails all have ingredients added once distillation is finished, and those are the bottles worth a second look. A classic, unflavored gin is the simple case.
What gin is made from
Every gin starts as a neutral spirit, and most neutral spirit is distilled from grain: wheat, corn, barley or rye, sometimes a mix. Some distillers start from grapes, potatoes, sugar cane or molasses instead. The grain is mashed and fermented into a wash that still carries the grain's proteins, gluten among them, and that wash is then distilled to more than 95 percent alcohol.
The gin itself is made in a second step. In a distilled gin, the neutral spirit goes back into a still with juniper and the other botanicals, so it passes through distillation twice. In a compound gin, botanical extracts are mixed into the neutral spirit with no second distillation. The whole process is in how gin is made, and what is actually in it, and the styles that result are laid out in types of gin, every style explained.
Why distillation removes gluten
A still separates a liquid by what turns to vapor. Alcohol boils at about 173°F, well below water at 212°F, so as the wash is heated the alcohol rises first and carries light aromatic compounds with it. The vapor travels over into a condenser and turns back into liquid. Proteins never make that journey. They are large, heavy molecules that do not vaporize at those temperatures, so they stay in the still with the sugars, starch and grain solids and are emptied out with the spent mash.
The FDA also named the one way it can go wrong. Gluten would only be expected to reach the distillate, the agency wrote, "under poor manufacturing practices in which the initial material is splashing into the distillate due to poor design of the still." That is a question of a badly built or badly run still, not of the grain. The FDA's reasoning is set out in its final rule on gluten-free labeling, published in the Federal Register in August 2020.
Gluten-free gin and the label
For years, US rules said a gin made from wheat, barley or rye could not be called gluten free, however clean its distillation. Under the 2014 policy of the Alcohol and Tobacco Tax and Trade Bureau, which regulates alcohol labels and advertising, the most such a spirit could say was that it had been "processed to remove gluten," next to a statement that its gluten content could not be verified. Many guides written before 2020 still describe that rule.
It changed in October 2020. Following the FDA's rule, the bureau issued TTB Ruling 2020-2, which allows a "gluten-free" claim on spirits distilled from gluten-containing grains as long as good manufacturing practices keep any gluten-containing material out of the finished product. If ingredients containing protein are added after distillation, the producer has to be able to show that those ingredients are free of gluten too, and how cross-contact was prevented, including from anything the spirit was stored in.
The claim is voluntary, and most gins do not make it, so a label that says nothing about gluten tells you little either way. A label that does say gluten free means the producer has taken on the responsibility of backing the claim up.
Which gins to check
The classic, unflavored styles are the simplest, and London Dry is the clearest of them, because it is defined by the still doing all of the flavor work, as explained in what is London Dry gin. The bottles worth a closer look are the ones where something happens after distillation.
Flavored and pink gins. Fruit, flowers, sweeteners and color usually go in after the gin is distilled. Most of those ingredients have nothing to do with gluten, but they are the part of the bottle the still never touched, so check the label or ask the producer. The same additions are what put sugar and extra calories into a gin, as covered in how many calories are in gin.
Sloe gin and gin liqueurs. Sloe gin is a liqueur, made by steeping sloe berries in gin with sugar. Like any liqueur, everything that goes in after the gin was distilled is the part to check.
Compound and barrel-aged gins. In a compound gin the neutral spirit has been distilled, but the botanical extracts mixed into it have not been through a still with it. An aged gin rests in wood after distillation, and the TTB ruling counts storage as a possible route for cross-contact. If you need certainty, the producer is the one to ask.
Canned and bottled cocktails. Some ready-to-drink cocktails sold in the US are flavored malt beverages, brewed from malted barley, rather than drinks made with spirits. They are a different product, and the reasoning about distillation does not apply to them. Check whether the can says it is made with gin or describes itself as a malt beverage.
Is a gin and tonic gluten free?
The gin is the easy part. Standard tonic water is not made from wheat, barley or rye, so a gin and tonic built from a classic gin and plain tonic has no gluten ingredients. Flavored and craft tonics vary by brand, and their labels are worth reading if you need certainty. The same thinking runs through other gin drinks: the gin is rarely the question, and the other ingredients are. A martini adds vermouth, and a Negroni adds vermouth and a bitter aperitif. Our own way with the classic long drink is in the art of the perfect serve.
What celiac organizations say
US celiac groups have reached the same conclusion as the regulators. The National Celiac Association lists pure distilled spirits, gin among them, as free of gluten, unless a gluten-containing ingredient is added after distillation.
Some people with celiac disease or gluten sensitivity still prefer to avoid spirits made from gluten grains altogether. If that is you, a gin distilled from a base such as corn, grapes or potatoes, or one labeled gluten free, is the simplest choice, and your doctor or dietitian is the right person to ask about your own diet.
Frequently asked questions about gin and gluten
Is gin safe for people with celiac disease?
US celiac organizations, including the National Celiac Association, consider pure distilled gin free of gluten, because distillation leaves the protein behind in the still. Flavored gins and anything with ingredients added after distillation are the ones to check. For advice on your own diet, ask your doctor or dietitian.
Does gin have gluten in it?
Pure distilled gin does not. Even when it is made from wheat, barley or rye, the gluten stays behind in the still. Gluten can only come back in through ingredients added after distillation, such as flavorings in some flavored gins and liqueurs.
Is gin made from wheat?
Often, but not always. Most gin starts from a neutral grain spirit, commonly wheat or corn and sometimes barley or rye. Others start from grapes, potatoes, sugar cane or molasses. Because distillation removes the protein, the base matters for flavor rather than for gluten.
Can gin be labeled gluten free in the US?
Yes, since October 2020. TTB Ruling 2020-2 allows a "gluten-free" claim on spirits distilled from gluten-containing grains if good manufacturing practices keep gluten out of the finished product. The claim is voluntary, so most gins do not carry it.
Is flavored gin gluten free?
It depends on what was added after distillation. Fruit, flowers, sweeteners and color go in after the still, so check the label or ask the producer.
Is a gin and tonic gluten free?
Standard tonic water is not made from wheat, barley or rye, so a gin and tonic made with a classic gin and plain tonic has no gluten ingredients. Flavored tonics vary by brand, so check the label if you need certainty.
Is vodka gluten free too?
Yes, for the same reason. Pure distilled vodka is gluten free even when it is made from wheat or rye, and flavored vodkas carry the same caveat as flavored gin.
