Tequila

At a glance

Tequila is Mexico's most-recognized spirit and one of the most rigorously regulated agricultural products in the country. It is distilled exclusively from one plant: Agave tequilana Weber var. azul, the Blue Weber agave. It is made in five denominated states of west-central Mexico (Jalisco plus four neighbors), governed by the federal norm NOM-006-SCFI-2012A regulatory-standard NOM is a federal Mexican product norm. Unlike facility NOMs (4-digit identifiers of specific distilleries), a standard NOM defines the rules for an entire category of product: which raw materials are permitted, where the product may be made, how it must be processed, and how the bottle must be labeled. Standard NOMs are written as "NOM-XXX-SCFI-YYYY" where XXX is the standard number and YYYY is the year. NOM-006-SCFI-2012 (Tequila). The official Mexican standard governing every aspect of Tequila production: which agave species may be used (only Agave tequilana Weber var. azul), which states and municipalities qualify, how the spirit must be distilled, what additives are permitted (up to 1% by volume even in '100% agave' bottles), and how the bottle must be labeled. Enforced by the Consejo Regulador del Tequila (CRT)., and protected as a Denomination of Origin since 1974. The category as we know it today is the product of about 250 years of distillation history in the Jalisco valley around the town of Tequila itself, an industry that grew on the back of the 1810s independence wars (when Spanish-controlled brandy became scarce and Mexican distillates filled the gap) and that consolidated under federal protection over the second half of the 20th century. Tequila is now produced at industrial scale by half a dozen multinational portfolio brands and at single-estate scale by perhaps three dozen independent houses, and most of the editorial questions a serious drinker should care about land somewhere between those two ends.

The five denominated states

The Tequila DO covers a defined federal territory: 181 specific municipalities across five states.

| State | Municipalities | Region | |---|---:|---| | Jalisco | 125 | Highlands (Los Altos) + Lowlands (Valles) | | Michoacán | 30 | Highland strip bordering Jalisco | | Tamaulipas | 11 | Added to the DO in 1977 | | Nayarit | 8 | Pacific coast strip | | Guanajuato | 7 | Bajío edge |

The DO was originally recognized in 1974; Tamaulipas was added three years later in 1977. Earlier reference works occasionally describe the DO as "five states" without naming the 181-municipality boundary, which is more precise and the one the CRT uses for certification.

Within Jalisco, two terroirs are clearly distinguishable.

The Highlands (Los Altos) sit at high elevation on iron-rich red soils east of Guadalajara, centered on towns like Arandas and Atotonilco el Alto. Agave grown here tends to produce larger piñas, and the resulting tequila is generally sweeter and more fruit-forward. The Lowlands (Valles del Tequila) sit on volcanic soils around the town of Tequila itself and in nearby Amatitán; piñas are smaller and the tequila is earthier and more peppery. Experienced drinkers can often identify the region of origin from the first sip.

Agave tequilana Weber var. azul

The Tequila DO is unusual among Mexican spirit categories for being legally restricted to a single agave species. By law, the only plant a Tequila distillery may ferment and distill is Agave tequilana Weber var. azul. Mezcal by contrast permits more than a dozen species; raicilla permits several. Tequila does not.

Blue Weber is a 5-to-8-year-maturing rosette agave with blue-gray waxy leaves and a 40-to-90-kg sugar-storing piña (the swollen heart of the plant, named for its pineapple-like appearance once the leaves are stripped). It is propagated almost entirely clonally, by transplanting hijuelos (the basal offshoots that mature plants throw up around their base). The result, repeated over decades and millions of plants, is an industry built on a narrow slice of the species' historical genetic diversity. The full implications of that propagation choice (disease vulnerability, the broken bat-pollination relationship, the early-2000s Fusarium wilt that destroyed roughly 25 percent of the DO's planted area at its peak) live on the species page.

How tequila is made

A tequila producer's path from agave to bottle has four canonical stages, and the choices made at each stage are most of what distinguishes a craft single-estate house from a corporate volume brand.

Cooking

The piñas arrive at the distillery at 22 to 28° Brix (roughly a quarter of their mass is dissolved sugar in the form of long-chain fructans, which yeast cannot ferment until the chains are broken down by heat). They must be cooked. The traditional method is the masonry horno, an above-ground brick oven that slow-roasts the piñas for 24 to 36 hours and produces Maillard browning and caramelization alongside the fructan hydrolysis: the cooked aromatics come from this stage. The industrial method is the autoclave, a stainless-steel pressure cooker that hydrolyzes fructans in 6 to 10 hours but produces far less Maillard flavor. The aggressively industrial method is the diffuser, which skips cooking entirely; see the diffuser section below.

Milling

The cooked agave is then crushed to extract its juice. Traditional houses use a tahona, a volcanic stone wheel originally pulled by a donkey or mule (now usually by a small tractor) that grinds the cooked piñas in a circular pit. The modern method is the roller mill, a mechanical sequence of toothed cylinders that extracts more juice faster and with less labor. Some houses run both and blend the streams.

Fermentation

The extracted juice (called mosto) is fermented in open or closed vats over two to five days. Traditional houses ferment with native yeasts in open wooden tinas; industrial houses use cultured commercial yeasts in closed stainless. Wild fermentation gives more complexity; cultured fermentation gives more consistency.

Distillation

NOM-006-SCFI-2012A regulatory-standard NOM is a federal Mexican product norm. Unlike facility NOMs (4-digit identifiers of specific distilleries), a standard NOM defines the rules for an entire category of product: which raw materials are permitted, where the product may be made, how it must be processed, and how the bottle must be labeled. Standard NOMs are written as "NOM-XXX-SCFI-YYYY" where XXX is the standard number and YYYY is the year. NOM-006-SCFI-2012 (Tequila). The official Mexican standard governing every aspect of Tequila production: which agave species may be used (only Agave tequilana Weber var. azul), which states and municipalities qualify, how the spirit must be distilled, what additives are permitted (up to 1% by volume even in '100% agave' bottles), and how the bottle must be labeled. Enforced by the Consejo Regulador del Tequila (CRT). requires two distillations for any product labeled tequila. The first pass (called ordinario) takes the fermented mosto from roughly 5% to 25% ABV. The second pass (called rectificación) takes it from 25% to 55% ABV. Traditional houses use copper pot stills, which interact chemically with sulfur compounds and influence the final flavor; industrial houses use stainless steel columns. Most premium tequila lands at 40 to 46% ABV after dilution.

What "100% agave" actually means

The single most-important consumer-facing label on a tequila bottle is "100% de agave" (or "100% agave"). Under NOM-006-SCFI-2012A regulatory-standard NOM is a federal Mexican product norm. Unlike facility NOMs (4-digit identifiers of specific distilleries), a standard NOM defines the rules for an entire category of product: which raw materials are permitted, where the product may be made, how it must be processed, and how the bottle must be labeled. Standard NOMs are written as "NOM-XXX-SCFI-YYYY" where XXX is the standard number and YYYY is the year. NOM-006-SCFI-2012 (Tequila). The official Mexican standard governing every aspect of Tequila production: which agave species may be used (only Agave tequilana Weber var. azul), which states and municipalities qualify, how the spirit must be distilled, what additives are permitted (up to 1% by volume even in '100% agave' bottles), and how the bottle must be labeled. Enforced by the Consejo Regulador del Tequila (CRT)., this phrase means the spirit was distilled exclusively from Agave tequilana sugars. The alternative is mixto tequila, which by law can be as little as 51% agave-derived; the other 49% can be sugars from cane, corn syrup, or any other fermentable. Mixto tequila does not have to display the percentage on the label, only the absence of the "100% agave" phrase.

The single most-misunderstood loophole follows. NOM-006-SCFI-2012A regulatory-standard NOM is a federal Mexican product norm. Unlike facility NOMs (4-digit identifiers of specific distilleries), a standard NOM defines the rules for an entire category of product: which raw materials are permitted, where the product may be made, how it must be processed, and how the bottle must be labeled. Standard NOMs are written as "NOM-XXX-SCFI-YYYY" where XXX is the standard number and YYYY is the year. NOM-006-SCFI-2012 (Tequila). The official Mexican standard governing every aspect of Tequila production: which agave species may be used (only Agave tequilana Weber var. azul), which states and municipalities qualify, how the spirit must be distilled, what additives are permitted (up to 1% by volume even in '100% agave' bottles), and how the bottle must be labeled. Enforced by the Consejo Regulador del Tequila (CRT). permits up to 1% additives by volume (caramel coloring, oak extract, glycerin, sugar syrup) to be added at bottling, even to bottles labeled "100% agave." A producer can run a perfectly traditional brick-oven, tahona-milled, copper-pot tequila and legally add caramel coloring and oak extract at the end without altering the label. This is the practical difference between "100% agave" and what the additive-free movement calls a genuinely transparent bottle.

Aging classifications

NOM-006-SCFI-2012A regulatory-standard NOM is a federal Mexican product norm. Unlike facility NOMs (4-digit identifiers of specific distilleries), a standard NOM defines the rules for an entire category of product: which raw materials are permitted, where the product may be made, how it must be processed, and how the bottle must be labeled. Standard NOMs are written as "NOM-XXX-SCFI-YYYY" where XXX is the standard number and YYYY is the year. NOM-006-SCFI-2012 (Tequila). The official Mexican standard governing every aspect of Tequila production: which agave species may be used (only Agave tequilana Weber var. azul), which states and municipalities qualify, how the spirit must be distilled, what additives are permitted (up to 1% by volume even in '100% agave' bottles), and how the bottle must be labeled. Enforced by the Consejo Regulador del Tequila (CRT). defines five aging categories. A sixth (Cristalino) operates as an industry-recognized category but is not yet codified in the norm.

• Blanco / Plata / Silver: bottled directly from the still, sometimes after a brief stainless rest. Pure expression of the distillate.
• Joven / Gold: a marketing category, typically a mixto with caramel coloring added to mimic the appearance of an aged tequila. Not an aging class in any meaningful sense.
• Reposado: rested 2 to 12 months in oak. Most are aged in used American whiskey barrels.
• Añejo: aged 1 to 3 years in oak.
• Extra Añejo: aged 3 or more years in oak. Introduced as a category in 2006 by amendment to the predecessor norm.
• Cristalino: a de facto sixth category, recognized by consumers and producers but not yet codified in NOM-006-SCFI-2012A regulatory-standard NOM is a federal Mexican product norm. Unlike facility NOMs (4-digit identifiers of specific distilleries), a standard NOM defines the rules for an entire category of product: which raw materials are permitted, where the product may be made, how it must be processed, and how the bottle must be labeled. Standard NOMs are written as "NOM-XXX-SCFI-YYYY" where XXX is the standard number and YYYY is the year. NOM-006-SCFI-2012 (Tequila). The official Mexican standard governing every aspect of Tequila production: which agave species may be used (only Agave tequilana Weber var. azul), which states and municipalities qualify, how the spirit must be distilled, what additives are permitted (up to 1% by volume even in '100% agave' bottles), and how the bottle must be labeled. Enforced by the Consejo Regulador del Tequila (CRT).. Most cristalinos are añejos or extra añejos that have been charcoal-filtered to clarity, retaining the aged flavor while losing the visible color of barrel time.

The diffuser question

A diffuser is an industrial extraction machine that strips sugar directly from raw, uncooked agave fiber by spraying it with hot water and acid. It is faster and cheaper than cooking whole piñas in stone ovens or autoclaves, but it skips the Maillard reactions and caramelization that build traditional tequila flavor. Diffusers are legal under NOM-006-SCFI-2012A regulatory-standard NOM is a federal Mexican product norm. Unlike facility NOMs (4-digit identifiers of specific distilleries), a standard NOM defines the rules for an entire category of product: which raw materials are permitted, where the product may be made, how it must be processed, and how the bottle must be labeled. Standard NOMs are written as "NOM-XXX-SCFI-YYYY" where XXX is the standard number and YYYY is the year. NOM-006-SCFI-2012 (Tequila). The official Mexican standard governing every aspect of Tequila production: which agave species may be used (only Agave tequilana Weber var. azul), which states and municipalities qualify, how the spirit must be distilled, what additives are permitted (up to 1% by volume even in '100% agave' bottles), and how the bottle must be labeled. Enforced by the Consejo Regulador del Tequila (CRT). and have been increasingly used at the volume end of the category since the 1990s. They are rarely declared on the label.

Editorial confidence about which brands use diffusers is uneven. The Tequila Matchmaker / Cuervo-watching community has documented a spectrum from high-confidence (Sauza and Hornitos are well-attested; both are NOM 1102NOM (Norma Oficial Mexicana) is the Mexican federal product-standard system. On a tequila bottle the NOM number is the unique identifier of the distillery facility where the tequila was made — every drop in the bottle came from a plant operating under that NOM. Different brands made at the same NOM share a distillery. NOM 1102: Tequila Sauza, S.A. de C.V. (Tequila, Jalisco). Beam Suntory; mass-market.) to low-confidence speculation, and every tier between. The Wave 1 craft producers covered on this site (Tequila Ocho, Fortaleza, El Tesoro / Tapatío, Siete Leguas) are documented non-diffuser houses. The corporate-portfolio premium brands (Patrón, Don Julio, Herradura) operate at industrial scale and attract scrutiny; each producer page on this site carries a per-house diffuser_confidence label with the cited evidence behind it.

Additive-free certification and the CRT v. AFA litigation

The additive-free certification movement emerged in the 2010s as a transparency response to the 1%-additives loophole described above. The leading public registry was maintained by Tequila Matchmaker and the affiliated Additive Free Alliance (AFA), which audited producers, charged certification fees, and published a searchable list of certified houses.

In March 2024, federal authorities raided the Sanschagrin home in Guadalajara (the Matchmaker founders). In September 2024, Tequila Matchmaker took down its public additive-free list. On March 4, 2025, the CRT filed suit in US federal court (Middle District of Florida) against the Additive Free Alliance and the affiliated S2F Online. The CRT alleges that the AFA's certification regime infringes the CRT's exclusive regulatory authority over Tequila certification under NOM-006-SCFI-2012A regulatory-standard NOM is a federal Mexican product norm. Unlike facility NOMs (4-digit identifiers of specific distilleries), a standard NOM defines the rules for an entire category of product: which raw materials are permitted, where the product may be made, how it must be processed, and how the bottle must be labeled. Standard NOMs are written as "NOM-XXX-SCFI-YYYY" where XXX is the standard number and YYYY is the year. NOM-006-SCFI-2012 (Tequila). The official Mexican standard governing every aspect of Tequila production: which agave species may be used (only Agave tequilana Weber var. azul), which states and municipalities qualify, how the spirit must be distilled, what additives are permitted (up to 1% by volume even in '100% agave' bottles), and how the bottle must be labeled. Enforced by the Consejo Regulador del Tequila (CRT).. The case is ongoing as of this writing.

Empirically, certified-additive-free status for the producers above has not changed: the bottles still contain no additives. What has changed is the public citation chain. The producers continue to declare their own additive practices; independent reviews corroborate; the editorial position on this site is that the litigation is procedural, not factual.

Bat pollination and the agave-supply question

Blue Weber agave is, in its native ecology, pollinated by long-nosed bats (Leptonycteris species) that migrate north along the Pacific corridor of Mexico each year, drinking nectar from flowering agaves at night and carrying pollen between plants. In its commercial ecology, the relationship has been severed: every plant harvested before flowering is a plant that produces zero nectar, and the millions of pre-flowering agaves across Jalisco are functionally dead zones for the bats migrating through.

The Bat Friendly Tequila initiative (founded 2017 by ecologist Rodrigo Medellín and the Tequila Interchange Project) certifies producers that allow 5% of their plants to flower before harvest, restoring a small portion of the bat nectar supply. Certified brands are a small fraction of the market. The broader genetic-uniformity problem that comes from clonal propagation, and the periodic disease outbreaks (most recently the early-2000s Fusarium wilt) it makes inevitable, are covered in depth on the Agave tequilana species page.

Exemplar producers

See also