How It Works

Gin is one of the more logically constructed spirits — once the mechanism clicks, everything from the price on the shelf to the flavor in the glass starts making sense. This page walks through exactly how gin is made, from the base alcohol through distillation and botanical infusion, who controls what at each step, and what separates a gin that tastes like a pine forest from one that tastes like a flower shop.

The basic mechanism

Start with neutral grain spirit. That's the foundation of almost every gin on the market — a high-proof alcohol, typically distilled to 95% ABV or higher, that's been stripped of nearly all character from whatever grain it started as. Wheat, rye, corn, barley: it barely matters at this point, because the spirit is so thoroughly rectified that it's essentially a blank canvas.

What makes gin gin is what happens next. Botanicals — plant materials including roots, berries, peels, seeds, and bark — are introduced to that neutral base, and the defining botanical, by law, must be juniper. The US regulations governing gin are administered through the Alcohol and Tobacco Tax and Trade Bureau (TTB) under 27 CFR Part 5, which specifies that gin must be produced from a base spirit with juniper berries and other botanicals and must contain the characteristic flavor of juniper. Without that juniper-forward profile, the TTB will not allow the word "gin" on the label.

The actual mechanism of flavor transfer happens through one of two primary methods: distillation with botanicals present, or compounding (cold infusion or direct addition of botanical extracts). The distinction matters enormously to the final product and to how a bottle is categorized — more on that at Gin Production Methods.

Sequence and flow

A distilled gin follows a specific production sequence:

1. Base spirit production — Neutral grain spirit is distilled, often to 96% ABV, then diluted slightly before use.
2. Botanical preparation — Botanicals are weighed, often in precise ratios guarded as proprietary recipes, and either added directly to a still charge or placed in a basket mounted above the liquid (vapor infusion).
3. Redistillation — The base spirit runs through a pot still or continuous still again, carrying volatile aromatic compounds from the botanicals into the distillate.
4. Cutting — The distiller separates the heads, heart, and tails of the run. Only the heart — roughly the middle portion — goes into the final product.
5. Dilution and blending — The high-proof distillate is cut with demineralized water to reach bottling strength, typically 40–47% ABV for standard expressions.
6. Filtering and bottling — Most gins undergo light filtration. Unlike whiskey, gin requires no barrel aging (though some styles invite it), so the timeline from distillation to bottle can be as short as a few days.

Compound gin skips step 3 entirely. Botanical extracts or essences are added post-distillation. The TTB permits this, but a compound gin cannot be labeled "distilled gin" — a distinction worth knowing when reading a gin label.

Roles and responsibilities

Inside a distillery, gin production involves at least three distinct decision points, each owned by someone different.

The master distiller controls the still — cut points, run time, temperature profiles. A tighter cut means a cleaner spirit but less overall yield. Running cooler and slower extracts more delicate aromatic compounds; higher heat pushes more extraction of heavier, oilier compounds from botanicals like angelica root and orris.

The head blender or recipe developer owns the botanical bill. The number of botanicals in commercial gins ranges from 4 to over 40 — Hendrick's uses 11 signature botanicals, while Monkey 47 from the Black Forest region of Germany deploys, as its name suggests, 47. The ratios, the sourcing, and the preparation method (fresh vs. dried, whole vs. ground) all sit within this role.

The quality team manages compliance — verifying that the final spirit meets TTB minimum standards, that ABV measurements are accurate, and that batch documentation supports the label claims. A gin sold in the US must reach a minimum of 40% ABV (27 CFR §5.22(c)).

What drives the outcome

Flavor in gin is not random — it's the intersection of botanical selection, extraction method, and distillation precision.

Botanical source and condition determine baseline character. Juniper from Tuscany has a different aromatic profile than juniper from Macedonia. Coriander seed sourced from Morocco (warm, spicy) behaves differently than Bulgarian coriander (citrusy, floral). Distillers who source carefully and specify origin are doing something meaningfully different from those buying commodity botanical blends.

Extraction method determines which flavor compounds survive. Steeping botanicals overnight before distillation (maceration) extracts water-soluble compounds. Vapor infusion, where the spirit vapor passes through a botanical basket without direct liquid contact, tends to produce lighter, more floral profiles. This is why comparing a London Dry Gin — which prohibits any post-distillation additions — to a contemporary gin that uses both maceration and cold infusion reveals such different flavor architectures even at similar ABV levels.

Still geometry shapes the spirit's texture and brightness. Tall column stills favor lighter, more precise distillates. Short, fat pot stills retain more congeners and produce richer, oilier spirits. The relationship between still shape and final flavor is as direct as the relationship between a pan's size and how quickly it heats.

The full picture of how these variables stack up — and how gin styles diverge as a result — is mapped across ginauthority.com. The mechanism is consistent; the outcomes are not.