Koreans not only eat birthday cakes, but also drink a bowl of seaweed soup. Seaweed soup is a tonic for Korean pregnant women after delivery, and it also represents Koreans' respect for their mothers and commemorates their pain during childbirth. Koreans believe that seaweed is good for postpartum conditioning, so there is a tradition of eating kelp. Seaweed soup is regarded as a nourishing holy product, which is cheap and nutritious. Leslie, a nutritionist from Youlian, said that kelp is rich in protein, vitamin A and minerals, which are easy to absorb and have great benefits to the body. In addition, kelp contains soluble fiber, which is easier to digest and absorb than ordinary fiber, which is helpful for smooth defecation and postpartum slimming. Korean seaweed soup tastes very light. There are two ways to add beef or clams. Adding beef is more tonic, which helps to reduce the coldness of kelp. With clams, it tastes fresh and sweet. Nowadays, only traditional Korean restaurants have this kind of soup. They sell more kelp clam broth and are greedy for its fresh and sweet taste.