alcohol unit

A standardized measure of alcohol consumption defined as 10 milliliters, or about 8 grams, of pure ethanol, the amount in roughly a small glass of wine, half a pint of average beer, or a single pub measure of spirits, though actual servings vary widely. Health guidelines in the United Kingdom and several other countries express low-risk drinking limits in these units per week, giving drinkers a single currency for adding up beer, wine, and spirits. The unit system reveals how easily intake accumulates: a large glass of strong wine can contain three units, and home pours are typically more generous than pub measures. Critics note that unit arithmetic demands numeracy and honest pouring, but as a public health tool it remains the clearest way to translate the abstract chemistry of ethanol into countable, comparable drinks.