Every afternoon, brew a cup of coffee.The rich aroma not only refreshes the mind but also alleviates stress and relaxes the mood.Studies abroad have shown that coffee has certain health benefits in treating and preventing diseases.Although there are many benefits to drinking coffee, if you are not careful about details, it can lead to potential health hazards.The BBC recently warned that coffee should be drunk as soon as possible after brewing.If coffee is left exposed in the air for a long time, fungi present in the air will quickly adhere to the cup.

Professor Ardingdon Yack of Lancaster University conducted an experiment placing freshly brewed coffee in a regular office; tests found that indoor air pollution mainly includes bacteria, fungi (including spores), pollen, and organic compounds from biological bodies.After drinking one or two sips and stirring the coffee, it will form stains on the rim and inside walls of the cup within 10 minutes, which can quickly absorb airborne fungi, thus contaminating the coffee.Coffee contains a substance called tannic acid, which darkens in color over time if not drunk promptly after brewing, and its aroma becomes less rich.

Therefore, it is best to drink the brewed coffee within 10 minutes.In addition, when drinking coffee, use a coffeemaker, pour as much as you need at one time, and cover the coffeemaker with its lid.

For single cups, either finish them quickly or use a covered cup for brewing.Especially noteworthy is that after finishing your coffee, clean the stains on the cup promptly to avoid bacterial growth.If your cup has accumulated many coffee stains, the simplest cleaning method is to use toothpaste and salt.First rinse the cup with water, then rub the walls of the cup with dry salt or toothpaste, and finally wash it with clean water.First, rinse the cup with water, then rub the cup walls with dry salt or toothpaste and wash it with clear water.