Can Tremella and Lotus Seed Soup Be Eaten the Next Day?

White fungus and lotus seed soup is not only refreshing and delicious but also helps clear internal heat, relieve summer heat, moisten the lungs, and alleviate dryness—making it an ideal nourishing dish for summer. Many people prepare this soup, yet sometimes they cannot finish it all at once. So, can white fungus and lotus seed soup be consumed the next day?

Can white fungus and lotus seed soup be eaten the next day?

Yes, white fungus and lotus seed soup can safely be consumed the next day. A common misconception holds that white fungus soup should not be stored overnight, primarily because white fungus contains nitrates, which—under bacterial action—may be reduced to nitrites. Nitrites can impair hematopoietic function and are recognized as potential carcinogens, thus raising health concerns. However, in reality, such concerns are unwarranted. A prior scientific study used black fungus (a close relative of white fungus) to investigate this issue. The results showed that even after overnight storage, the nitrite content in black fungus remained virtually unchanged—regardless of storage temperature—and the variation was so minimal as to be negligible. Therefore, overnight storage poses no safety risk.

The primary component of white fungus is polysaccharide, though it does contain trace amounts of nitrates—mainly in its dried form. Upon soaking, the nitrate concentration decreases significantly. Moreover, both nitrates and nitrites are highly water-soluble; during soaking and rinsing, they readily dissolve into the soaking water. Consequently, repeated washing further reduces their residual levels.

Although white fungus and lotus seed soup is flavorful and rich in collagen—offering excellent moisturizing benefits—it also possesses properties that nourish yin, relieve dryness, promote restful sleep, strengthen the spleen, and aid digestion. Nevertheless, moderation is key: excessive consumption is not advisable. Prepare only the amount needed per serving to avoid waste and prevent palate fatigue. We hope this information proves helpful to you.