My grandmother taught me this trick to get cloudy drinking glasses sparkling clear again with 0 effort. Here’s how it works

3. Why vinegar works so well

Mineral haze is alkaline, and vinegar is mildly acidic, usually around 5% acidity. That mild acid reacts with calcium deposits and loosens them from the glass surface. It is gentle enough for routine kitchen use but strong enough to tackle common hard-water buildup.

This works especially well on cloudy tumblers, wine glasses, pint glasses, and even glass carafes that have collected a film over time. If the cloudiness is caused by residue, vinegar can often restore clarity in one treatment. If