網上看來的，試了一下，效果很好. Adding white vinegar or apple cider vinegar

網上看來的，試了一下，效果很好. Adding white vinegar or apple cider vinegar to your pot of water allegedly results in softer, easier-to-peel eggshells. That's because the acid in vinegar dissolves some of the calcium carbonate that makes up the egg's hard exterior.