HeySolids
Choking risk
Kimchi is a low choking risk since it is soft fermented cabbage, though long stringy strands can bunch up in the mouth.
Chop any long pieces small and mix a little into a scoopable food. See how to serve for age-by-age prep.
Allergens
Cabbage itself is not a common food allergen, so a reaction to plain vegetable kimchi is rare. What matters is what goes in with it.
Most kimchi is made with fish sauce, salted shrimp, or anchovy, so treat any jar as containing fish and shellfish unless the label says vegan. Oyster, sesame, soy, and wheat turn up in some recipes and not others, and oyster is a mollusk, which is not on the US label list - so it will not always appear in bold. Read the full ingredient list each time you buy.[1]
If the kimchi contains an allergen your baby has not had yet, introduce that allergen on its own first rather than inside kimchi. Otherwise start with a small amount and watch for a reaction.
If baby refuses
Kimchi is sour and sharp, and often spicy, so expect it to take many tries. Choose a mild version and fold a small amount into a food baby already likes, such as rice or mash, to soften the tang.
Food safety
Kimchi is fermented in a lot of salt and stays salty even after rinsing, so keep it to a small, occasional taste rather than a regular food. Don't add salt to food in the first 12 months, and keep it low through the toddler years.[2] Rinsing under cold water and choosing a lower-salt version both bring it down.
How to serve
Up to 2 years old
Best to skip - offer plain cooked cabbage instead
Kimchi is brined in salt, and a normal serving carries more than a young child needs, so it is worth waiting until age 2. The chili is a separate matter - it is a question of what your baby will accept, not of safety.
In Korea, kimchi is often introduced well before this, usually rinsed in water and chopped small to take off the salt and chili. That is a long-standing practice, and if it is part of how your family eats, rinsing well and keeping the portion small is the approach to take.
What to offer instead
Plain cooked cabbage, finely chopped and soft, gives the same vegetable without the salt or chili.
2+ years old
Small rinsed amounts of milder kimchi
After age 2, a small amount of mild kimchi can be mixed into a family dish. Rinse it under cold water to cut the salt and chili, and chop it small. Keep it occasional and the rest of the meal low in salt.