Yellow sugar stored for more than one year can cause gastrointestinal discomfort, diarrhea and other symptoms, and even cause allergic reactions.

Therefore, it must be noted that raw sugar is not sterile, especially sugar that has been stored for too long, and it cannot be eaten raw. When eating white sugar, heat it to 70℃ for more than 3 minutes.

The best container to keep sugar is porcelain jar or glass bottle. After the sugar is put into the container, be sure to cover the lid tightly to prevent air from entering. Then put the container in a cool and ventilated place, not exposed to the sun or near hot things.