“Eat seaweed soup on your birthday.”

“Eat mi-yuk-gook (seaweed soup) on our birthday.”
Korean people have a tradition of eating seaweed soup every birthday because this same soup is used as a source of rejuvenation for women who have just given birth. Seaweed contains many of the nutrients that are needed to make a body healthy and help it recuperate, so seaweed soup is commonly used to aid new mothers. Therefore, seaweed soup is eaten on birthdays in order to appreciate the suffering their mothers went through.