Difference Between Distilled and Undistilled Alcoholic Drinks
Biology · Microbes in Human Welfare · NEET
The only difference is one extra step. Wine and beer are made WITHOUT distillation, so they have low alcohol. Whisky, brandy and rum are made WITH distillation of the fermented broth, so they have high alcohol. Memory hook: "W-B stay Without (Wine, Beer); W-B-R Ride the still (Whisky, Brandy, Rum)."
Same yeast ferments the raw material to ethanol; the drink is undistilled (wine, beer) or distilled (whisky, brandy, rum) based only on the processing step.
Your doubts, answered
Is wine distilled or undistilled?
Wine is UNDISTILLED. NCERT clearly says wine and beer are produced without distillation. Only whisky, brandy and rum are distilled. This exact line is a favourite NEET one-liner.
Which drinks are made WITHOUT distillation?
Only two in NCERT: wine and beer. They are just fermented (yeast turns sugar into ethanol) and then bottled. No distillation step, so their alcohol content stays low.
Which drinks are made WITH distillation?
Whisky, brandy and rum. After fermentation, the fermented broth is distilled (heated so ethanol boils off and is collected), which raises the alcohol content. Remember three: Whisky, Brandy, Rum.
Why does distillation make the drink stronger?
Ethanol boils at a lower temperature than water. On heating the fermented broth, ethanol vapour comes out first and is collected. This concentrates the alcohol, so distilled drinks are much stronger than beer or wine.
Is the microbe different for distilled and undistilled drinks?
No. The SAME yeast, Saccharomyces cerevisiae (brewer's yeast), ferments malted cereals and fruit juices for all of them. The difference is only the processing step (with or without distillation), not the microbe. This is a common trap.
What decides which drink you get?
NCERT says it depends on (1) the type of raw material used for fermentation and (2) the type of processing, meaning with or without distillation. Both factors together decide the final drink.
⚠️ The NEET trap ✗ Wine and beer are distilled, and different yeasts make each alcoholic drink. ✓ Wine and beer are UNDISTILLED; only whisky, brandy and rum are distilled. The SAME yeast (Saccharomyces cerevisiae) makes all of them. 🧠 NEET flips the words 'with' and 'without' distillation. Lock the pair: Wine + Beer = without; Whisky + Brandy + Rum = with.
Solved Microbes in Human Welfare NEET PYQs
Try the real previous-year questions from this chapter — each with the answer and a full solution.
