MODULE 07 · 8 MIN
Coffey Stills, Column Distillation and Grain Spirit
Column stills operate continuously rather than one pot charge at a time. Linked sections repeatedly vaporise and condense the liquid, allowing efficient separation and production at a range of strengths. The Coffey still is a historically influential two-column design.
Higher distillation strength generally creates a lighter spirit because fewer flavour compounds remain, but column spirit need not be completely neutral. Grain selection, fermentation, still configuration and collection strength still matter. Mature grain whisky can be subtle rather than empty.
Key ideas
Column stills can operate continuously.
Distillation strength influences flavour intensity.
Grain whisky retains meaningful production choices.
Glossary
- Column still
- A continuous distillation system with repeated separation stages.
- Collection strength
- The alcoholic strength at which distilled spirit is collected.
Three-question self-check
Pause before moving on.
1. Can you explain: Column stills can operate continuously.
Column stills can operate continuously.
2. Can you connect: Distillation strength influences flavour intensity.
Distillation strength influences flavour intensity.
3. Can you define “Column still” in your own words?
Grain whisky retains meaningful production choices.
Sources & further reading
- SWA — How Scotch Whisky is madeScotch Whisky Association
- The Scotch Whisky Regulations 2009UK Legislation
Last reviewed: 2026-08-09