Gin production: from first recipe to repeatable batches

Juniper gives gin its identity. Other botanicals can bring citrus, spice, flowers or earthy depth, but they work around that recognizable center. A long ingredient list does not make a better gin. The balance in the glass does.

Your sales market determines the category rules. In the EU, gin uses agricultural ethyl alcohol, has a predominant juniper taste and a minimum bottled strength of 37.5% ABV. Distilled gin and London gin have additional production requirements. Simply adding essences does not qualify as distilled gin; London gin restricts how flavor, color and sweetness are introduced. A high bottling strength alone does not make a gin “dry.”

In the United States, gin must have juniper as its main characteristic flavor and be bottled at 40% ABV or above. Its “distilled” designation has its own requirements. Decide which category and markets you want to serve before fixing the process and label. Boiler infusion, vapor infusion and our Extractor describe equipment methods; they are not three legal categories of gin.

Most of the liquid in your gin begins as neutral spirit. Buying a consistent agricultural base lets you concentrate your investment, production time and attention on botanicals. Making it yourself adds a second craft: converting a raw material into a clean, suitable base before you develop the gin.

That choice changes the distillery. A grain-to-glass route needs mashing, fermentation and enough separation capacity to prepare the base. A purchased-base route lets you begin directly with botanical development. Taste your chosen base at a consistent dilution, then choose the route that gives your gin its foundation and your business a workable production rhythm.

A suitably configured NextGen hybrid can support neutral-spirit production and botanical distillation. If one still does both jobs, allow time for both in the production schedule. A separate iMini lets you develop recipes while the main still remains available for saleable batches.

Start with the drink someone will actually order. A gin for a long, refreshing tonic may need a different balance from a neat sipper. Taste your trials in that serve as well as on their own. A beautiful aroma in a concentrated sample can disappear behind tonic, ice and garnish.

Juniper gives you the foundation. Coriander can bring citrus and spice; peel can lift the opening; roots can add depth. These are useful directions, not fixed roles for every ingredient or extraction method. The variety, freshness, preparation and amount all matter. Record whether a peel is fresh or dried, how berries are prepared and which supplier lot you used.

Odin’s recipe-development approach starts with a simple structure you can understand. Change one variable, taste, then decide what is missing. You learn more from a clear comparison between two trials than from adding five botanicals at once. Small-scale development on iMini keeps that work away from your production schedule.

Boiler infusion puts your botanicals in direct contact with the liquid charge. It is our starting point for a bold, full-flavored gin: you can develop a concentrated botanical expression and blend it back to the balance you want. Preparation, contact time and the point at which you stop collecting all shape that result. Prolonged boiling can introduce cooked or harsh notes, so extraction and cuts belong in the same recipe.

Vapor infusion holds the botanicals above the liquid, in the vapor path. In our gin teaching, this produces a lighter expression. It also gives you a useful tool for ingredients such as flowers, where the stronger alcohol and different heat exposure in the vapor path can suit the extraction. Choose it for the contribution you want from that ingredient, rather than treating “vapor infused” as a mark of superior gin.

The optional iStill Extractor addresses the tradeoff between rich liquid extraction and prolonged boiling. Condensed spirit passes through botanicals in a separate chamber, then returns to the boiler in a repeating loop. The ingredients receive liquid contact without sitting in the boiling charge. You can pursue a fuller botanical expression while avoiding the direct boiling that can cook delicate ingredients.

Compare the methods in small trials using the same base and botanical quantities. Record contact time, preparation, power and collection. Taste at the same finished strength before choosing the approach for your production recipe.

A gin run changes as it progresses. Odin’s gin trials describe brighter citrus notes arriving earlier and rootier, nuttier character becoming more prominent later. Collecting everything together can lose the balance you wanted, even when the base spirit was already neutral.

Keep development fractions separate and taste them at a consistent, suitable dilution. Compare blends that finish earlier or include a little more late character. The question is whether that extra material gives the gin depth or simply overwhelms it. Collection decisions belong in the recipe alongside botanical weights.

Power and vapor speed also affect how the run develops. Increasing output is not just a scheduling change: it can alter the balance you collect. NextGen gives you control over power, reflux and take-off, with ABV control and automated cuts to repeat the operating strategy you have validated. You choose the flavor; the equipment helps you hold the process.

Power creates vapor flow; column diameter determines the area it travels through. At the same volumetric flow, doubling a round column’s diameter gives four times the area and a quarter of the average vapor velocity. Diameter and run power therefore work together. iStill’s power and reflux controls let you develop the run behavior around the botanical expression you want to collect.

Insulation reduces heat lost through the vessel and column. Otherwise some vapor condenses on cooler surfaces and returns as passive reflux—a part of the separation you did not deliberately set. On iStill, insulation and controlled power help make the intended run conditions easier to maintain.

Liquid management then controls what happens after condensation. The column condenser turns rising vapor into liquid; the controlled outlet determines what you collect and what returns as reflux. You can develop that split around your botanical profile without using coolant flow as the collection dial, provided the cooling system maintains full condensation.

Stainless steel gives the production vessel a corrosion-resistant, relatively unreactive structure. That matters when today’s juniper-led gin shares a still with tomorrow’s citrus recipe or another spirit: accessible surfaces and a documented cleaning routine help you make deliberate changeovers. Match direct, indirect or steam heating and any agitation to the actual charge. The vessel, extraction and controls then work together to carry your recipe from trial to production.

A clear distillate can become cloudy when you add water. As alcohol strength falls, some botanical oils become less soluble and form a haze known as louching. It can tell you that your gin carries a rich oil load. Develop clarity and flavor together: the goal is a finished gin that presents and drinks the way you intended.

Test dilution while you are developing the gin, not after the first commercial batch. Compare candidate strengths with your chosen water and the storage temperatures the bottle will encounter. Check clarity, aroma, texture and the intended serve together. Filtering can change flavor, so judge the filtered result rather than treating clarity as the only target.

Bottling strength is a creative decision too. In one development project, Odin compared the same recipe at 43% and 47% ABV for different drinking occasions. Try that comparison with your own gin. Keep the recipe constant, taste both in the intended serve and choose the strength that gives the botanical balance room to shine.

Rest your proofed samples and retaste them on a documented schedule before release. Your final specification should include the water, proofing method, finished strength and sensory checks. Repeatable distillation gives you a stable starting point; careful finishing makes it a finished gin.

A production recipe needs more than a multiplied botanical bill. Loading, ingredient preparation, contact conditions, heat-up and collection behavior can change with scale. Take what you learned on iMini into a production trial, then confirm the finished gin against your reference.

Write down the base specification, botanical lots and preparation, extraction conditions, run settings, collection decisions, proofing and release checks. Saved operating settings and automated cuts help repeat the validated process between batches and operators. Compare each finished batch with a retained reference sample.

You can see what that freedom means at Blue Rabbit Distillery in Tokyo. Mark Smyth develops distinct botanical expressions on his iStill 100, including a signature gin built around yuzu and hinoki. His interview describes both the creative experiments and what customers actually prefer. His Tokyo Dry Gin won Best of the Best in the Japanese Gin category at the Tokyo Whisky & Spirits Competition 2025. It is a clear example of a distiller building an individual style on iStill and earning recognition for the result.