Whiskey 101
How Whiskey Is Made: The Complete Process
A step-by-step guide through malting, mashing, fermentation, distillation, and maturation — the five stages of whiskey production.
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อัปเดต มี.ค. 03, 2026
## The Five Stages of Whiskey Production
Every whiskey passes through the same fundamental stages, though the details at each step vary enormously between distilleries and styles.
### 1. Malting
Barley is soaked in water for two to three days, spread on a malting floor to germinate, then dried in a kiln. Germination activates enzymes that will convert starch to sugar. If peat is burned in the kiln, the barley absorbs smoky phenolic compounds.
### 2. Mashing
The malted barley (or other grains) is ground into grist and mixed with hot water in a mash tun. Multiple water additions at increasing temperatures extract fermentable sugars, producing a sweet liquid called wort. The spent grain, called draff, is used as animal feed.
### 3. Fermentation
Wort is transferred to washbacks — large vessels of wood or stainless steel — and yeast is added. Over 48 to 96 hours, yeast converts sugars to alcohol and carbon dioxide, creating a beer-like liquid called wash at roughly 7-10% ABV.
### 4. Distillation
The wash is heated in copper stills to separate alcohol from water. Most Scotch whisky undergoes two distillations in pot stills. The stillman makes cuts to separate foreshots and feints from the desirable hearts. Bourbon and grain whisky typically use column stills for continuous distillation.
### 5. Maturation
New make spirit enters oak casks at 63-70% ABV and ages for years or decades. During maturation, the spirit extracts flavor compounds from the wood, undergoes oxidation through the porous oak, and loses volume to evaporation — the angel's share. The cask contributes up to 70% of the final whiskey's flavor.
Every whiskey passes through the same fundamental stages, though the details at each step vary enormously between distilleries and styles.
### 1. Malting
Barley is soaked in water for two to three days, spread on a malting floor to germinate, then dried in a kiln. Germination activates enzymes that will convert starch to sugar. If peat is burned in the kiln, the barley absorbs smoky phenolic compounds.
### 2. Mashing
The malted barley (or other grains) is ground into grist and mixed with hot water in a mash tun. Multiple water additions at increasing temperatures extract fermentable sugars, producing a sweet liquid called wort. The spent grain, called draff, is used as animal feed.
### 3. Fermentation
Wort is transferred to washbacks — large vessels of wood or stainless steel — and yeast is added. Over 48 to 96 hours, yeast converts sugars to alcohol and carbon dioxide, creating a beer-like liquid called wash at roughly 7-10% ABV.
### 4. Distillation
The wash is heated in copper stills to separate alcohol from water. Most Scotch whisky undergoes two distillations in pot stills. The stillman makes cuts to separate foreshots and feints from the desirable hearts. Bourbon and grain whisky typically use column stills for continuous distillation.
### 5. Maturation
New make spirit enters oak casks at 63-70% ABV and ages for years or decades. During maturation, the spirit extracts flavor compounds from the wood, undergoes oxidation through the porous oak, and loses volume to evaporation — the angel's share. The cask contributes up to 70% of the final whiskey's flavor.