Aluminum utensils are lightweight, beautiful, have good thermal conductivity, and their silvery-white color is resistant to rust and corrosion, making them very popular. However, aluminum is susceptible to acids and alkalis. Because of this weakness, leftover food should not be left in aluminum pots or pans overnight. Otherwise, it will not only corrode the aluminum products, affecting their service life, but more importantly, it will cause aluminum compounds to mix into the food, reducing the quality of the food and increasing people's intake of aluminum. Excessive aluminum can accumulate in the brain, which can easily lead to aging or dementia.