Knowledge Layer
Science & Process
Every alcoholic drink on earth is produced through one or more of three core processes — fermentation, distillation, and maturation. This section documents the science behind all of them: the chemistry, the biology, the physics, and the documented research that explains why every drink tastes the way it does.
All content sourced from peer-reviewed academic literature and official regulatory documentation · Last verified
The production sequence — how every alcoholic drink is made
Step 01
Fermentation
Yeast converts sugar to ethanol and CO₂. All alcoholic drinks begin here.
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Step 02 — spirits only
Distillation
Ethanol is concentrated by exploiting its lower boiling point than water.
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Step 03 — many categories
Maturation
Spirit or wine is transformed through contact with wood and oxygen over time.
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Crosscutting
Flavour Chemistry
What creates the specific taste and aroma compounds in every drink.
Coming →
Crosscutting
Water & Terroir
How geography, water hardness, and climate shape every stage of production.
Coming →
Core processes
Production science — live entries
Each entry covers the complete science at three reading levels: plain language (Curious), practical detail (Exploring), and full chemistry with citations (Deep Dive).
Live
Fermentation
How yeast converts sugar to ethanol and carbon dioxide. The EMP pathway, yeast strain selection, fermentation vessels globally, non-Saccharomyces organisms, sake multiple parallel fermentation. 7 peer-reviewed citations.
Process · Biochemistry · All drink categories
Live
Distillation
Pot still versus column still. The five cuts — foreshots, heads, hearts, tails, feints. Vapour-liquid equilibrium physics. Copper chemistry. Methanol regulatory limits. Distillation requirements for 8 spirit categories. 8 citations.
Process · Physical chemistry · Spirits only
Live
Maturation & Ageing
The four mechanisms of maturation. Oak wood composition. Wood extractives and flavour contribution. Angel's share by region globally. Mandatory ageing requirements for 11 spirit categories. Maillard reaction in toasting. Climate as a variable. 8 citations.
Process · Wood chemistry · Spirits and wine
Coming — Session 4
Flavour Chemistry
The volatile and non-volatile compounds that create taste and aroma. Esters, aldehydes, terpenes, phenols, fatty acids. Sensory thresholds. The official flavour wheel library — every wheel credited and sourced.
Crosscutting · Sensory science · All categories
Coming — Session 4
Water & Terroir
How water hardness, mineral content, and geographic origin shape fermentation and production. Burton-on-Trent gypsum. Pilsen soft water. Scotch water sources with legal protection. Bourbon limestone filtration. Sake brewing water hardness.
Crosscutting · Geography · All categories
Coming — Phase 7
Glassware & Serving Science
How vessel shape affects aroma concentration, temperature retention, and flavour perception. Documented sensory research. Every glass type individually documented with specifications and the science behind it.
Applied science · Sensory research · All categories
Coming — Phase 7
Altitude & Fermentation
How high altitude affects fermentation, distillation, and production. Bolivian Singani (legally defined by minimum altitude of 1,600m). Andean Pisco. Himalayan distilleries. Academic research on altitude and yeast behaviour.
Applied science · Geography · Selected spirits
Coming — Phase 7
Alcohol & the Body
The documented biology of ethanol metabolism. Alcohol dehydrogenase. Aldehyde dehydrogenase. Blood alcohol concentration formula. BAC legal limits by country. Genetic variation in enzyme activity. Sourced from official pharmacology and toxicology literature.
Biology · Pharmacology · Public health
What the science section covers
The complete mechanism behind every drink
Glycolysis and the EMP fermentation pathway
Yeast strain selection and flavour consequences
Pot still vs column still — physics and chemistry
The five distillation cuts and what each contains
Four mechanisms of barrel maturation
Oak wood composition — four chemical fractions
Angel's share by climate region globally
Copper's role in distillation — four reactions
Methanol chemistry and regulatory limits
Maillard reaction in barrel toasting
Volatile flavour compound formation
Sensory science of glassware
Water hardness and its effect on production
Altitude effects on fermentation
Blood alcohol concentration and metabolism
Official flavour wheels — every category