Korean Birthday Traditions: Seaweed Soup, Doljabi and the Day You Were Born
In Korea a birthday starts with a bowl of seaweed soup, a baby's first birthday is a party built around a fortune-telling game, and the date and hour you were born are the raw material of saju. Here are the traditions — and what your own birthday holds.
Why Koreans Eat Seaweed Soup on Birthdays
Miyeokguk (미역국), a light soup of seaweed simmered in broth, is the classic Korean birthday breakfast. It is traditionally the soup given to new mothers after childbirth, so eating it on your birthday is a quiet way of remembering the day you were born — and the person who gave birth to you.
There is a funny twist: “to eat seaweed soup” (미역국을 먹다) is also slang for failing an exam, because slippery seaweed suggests sliding out. Many students skip it on test days.
Baekil: the 100th Day
Baekil (백일) celebrates a baby's 100th day of life. Families share white rice cakes (baekseolgi) and invite neighbors and relatives to share them too, as a wish for the baby's long and happy life. Today it is often a small family gathering with photos and a decorated table.
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Doljanchi and Doljabi: the First Birthday
The first birthday, dol (돌), is one of the biggest days in a Korean childhood. The baby wears a hanbok, often with bright saekdong sleeves, and the family holds a party called doljanchi (돌잔치).
The highlight is doljabi (돌잡이): objects are laid out and everyone watches to see which one the baby grabs. Traditionally thread stands for a long life, money or rice for wealth, and a brush or book for learning; modern tables add a microphone, a stethoscope or a computer mouse. It is a game, and everyone cheers whatever the baby picks.
Korean Age and Your Birthday
Traditionally Koreans counted everyone as one year old at birth and added a year every New Year's Day, so a birthday did not change your age. Since June 2023, international age is the official standard, while the old counting age still turns up in conversation. You can see all three versions with our free Korean age calculator.
Your Birthday in Korean Saju
In saju, your birthday is not one sign but four pillars: the year, month, day and hour you were born, each written as two characters. The pillar of your birth day is the most personal — its heavenly stem, your Day Master, is the element that describes you.
That is why Korean saju asks for your birth time and place: the hour adds the fourth pillar, and true solar time at your birthplace can even move a birth near midnight to the next day.
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Questions people ask
Why do Koreans eat seaweed soup on their birthday?
Miyeokguk is traditionally given to new mothers after childbirth, so eating it on your birthday honors the day you were born and the person who gave birth to you.
What is doljabi?
At a first-birthday party (doljanchi), objects such as thread, money and a book are laid out, and the baby's pick is playfully read as a sign of their future — long life, wealth or learning.
What is baekil?
A celebration of a baby's 100th day, traditionally with white rice cakes (baekseolgi) shared with family and neighbors.
What does my birthday mean in Korean saju?
Your birth year, month, day and hour form four pillars. The day pillar's stem — your Day Master — is the element that describes you most personally.
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