The shelf life of birthday cake is generally 2 days, and it can be stored in refrigerator for 1-2 days. The suitable refrigeration temperature is 2-7℃. Don't put the birthday cake in the refrigerator for too long, because the longer it is left, the more bacteria it has, the worse it tastes and the worse its color. Some cakes have a short shelf life, such as mousse cake and cheesecake, and it is best not to refrigerate for more than 1 day.

Birthday cake originated in the west, and then slowly spread to China. The earliest cakes were made of several simple materials. These cakes are symbols of ancient religious myths and magical superstitions.

The origin of inserting candles in birthday cakes;

It is said to have originated in Greece. In ancient Greece, people believed in themis, the goddess of the moon. At her annual birthday celebration, people always put honey cakes and many lighted candles on the altar to form a sacred atmosphere to show their special respect for the goddess of the moon.

Later, with the passage of time, because of their love for children, the ancient Greeks always liked to put cakes and other things on the table for their children's birthdays, and put many small lit candles on them, and added a new activity-blowing out these lit candles.

They believe that lighted candles have mysterious power. If the birthday child makes a wish in his heart at this moment, and then blows out all the candles in one breath, then the child's good wish will surely come true. So blowing out candles has become a small program with auspicious significance at birthday parties, and gradually developed into an interesting activity of blowing out candles at birthday parties or banquets for children, adults and even the elderly.

Refer to the above? Baidu encyclopedia-birthday cake