When can babies eat miso?

From around 12 months, served in a safe shape and texture for their age.

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Miso

Very salty, so it waits until 12 months, and even then a little goes into the family pot.

Checked against official guidance on October 18, 2026 · How we review

Quick answer

Children can have miso from around 12 months. Prepare it as shown below.

From 12 monthsLow choking risk as servedAllergen: Soy

How to serve miso by age

12 months+

A little cooked into a family dish, or none

Before 12 months, skip miso: half a teaspoon has about 0.3 g of salt, and babies under 1 should have less than 1 g of salt a day from all their food. From 12 months, the CDC still says to avoid feeding young children foods high in salt, so the most to aim for is a little miso, such as half a teaspoon stirred into a whole family pot of soup or vegetables, now and then. Taking your child's portion out before the miso goes in is even better.

Size: Bite-sized pieces about 1 cm (just under ½ inch) of a family dish with a little miso stirred in, or none.
Check before serving: Check the label: soy, and any barley or wheat in the miso, each already eaten on its own without a reaction.

Always have your child sit upright in a high chair or at the table, and stay with them the whole time they eat. Keep to the size and texture for their stage. Every baby develops on their own timeline.

How to prepare miso

1
Before miso, make sure your child has already eaten soy (such as tofu) on its own with no reaction, and any grain in the miso, such as barley or wheat.
2
Read the label: check for barley or wheat (gluten), and for fish, such as bonito, in some pastes and soup mixes.
3
Cook the family dish, take your child's portion out, then stir the miso into the rest. If you do add it to your child's food, use only a little, and don't add salt or soy sauce as well.
4
Let your child's portion cool before serving.

How much to offer

None before 12 months. After that, a little miso cooked into a family dish, now and then. Half a teaspoon of miso (3 g) has about 112 mg of sodium (about 0.3 g of salt), and a teaspoon (6 g) about 224 mg (about 0.6 g of salt), so a small amount shared across the family pot is plenty. Your child decides how much to eat: stop when they turn away or close their mouth.

Common mistakes

Seasoning baby food with miso

Miso has about 3,730 mg of sodium per 100 g (about 9.3 g of salt), more than 6 times the NHS high line of 1.5 g of salt per 100 g. Babies under 1 should have less than 1 g of salt a day, and the NHS says not to add salt to their food. Wait until 12 months.

A full bowl of miso soup

A cup of miso soup has about 2.9 g of salt, more than a toddler's whole day (no more than 2 g for children aged 1 to 3, NHS). Give the solids with a few spoonfuls of broth.

Missing the barley or wheat

Some miso is made from soybeans and rice, but barley miso is made with barley, which contains gluten (NHS), and some miso may use wheat. In the US, barley isn't one of the major allergens labels must name (FDA), so read the ingredient list.

Missing fish in instant miso

Some miso pastes and soup mixes add fish, such as bonito extract. If your child hasn't had fish yet, or must avoid it, check the label.

Questions parents ask

Can miso be a choking hazard for babies?

Miso paste is a low choking risk. The foods it comes with matter more: cut tofu, noodles and vegetables in miso soup to a safe size, snip any plain nori into tiny pieces, and stay with your child during meals.

Can babies be allergic to miso?

Miso is made from fermented soybeans, so it contains soy, one of the most common food allergens in young children; the ACAAI says people with a soy allergy should not eat miso. Many kinds also contain a grain such as rice or barley, and some may contain wheat. Barley and wheat contain gluten (NHS). Wheat is one of the 9 major allergens US labels must name, but barley isn't (FDA), so read the ingredient list. Some instant miso pastes add fish, such as bonito. Introduce soy, and any grain in the miso, on its own first from around 6 months, through foods like tofu (NHS). Once they've gone well, a little miso isn't a new allergen.

Is miso healthy for babies?

Very salty: 100 g of miso has about 3,730 mg of sodium (about 9.3 g of salt). It also has about 13 g of protein and 2.5 mg of iron per 100 g, but a family dish uses so little that it adds flavor, not nutrients to count on. A teaspoon (6 g) has about 224 mg of sodium (about 0.6 g of salt), and a tablespoon (17 g) about 634 mg (about 1.6 g of salt).

When can babies have miso?

Not in the first year. It's very salty, and babies under 1 should have less than 1 g of salt a day. From 12 months, a little miso cooked into a family dish now and then is fine, once your child has had soy, and any barley or wheat in it, on their own.

Can toddlers have miso soup?

Not a cup of it. A cup of miso soup has about 2.9 g of salt, more than the 2 g a day the NHS gives as the most for children aged 1 to 3. Now and then, give your toddler the tofu, vegetables and noodles with a few spoonfuls of broth, thinned with hot water if you like.

Is miso gluten-free?

Not always. Miso made from soybeans and rice has no gluten grains in its ingredients, but barley miso is made with barley, and some miso may use wheat. Gluten is found in wheat, barley and rye (NHS). If your child has celiac disease or a wheat allergy, read the ingredients every time and ask your doctor or dietitian which miso is safe.

If your baby refuses miso

Your child doesn't need miso, so there's no need to keep offering it.
If they want the family flavor, try a little garlic, ginger or spring onion in their portion instead.
Eat the same dish yourself, with the miso added to your own bowl. Babies copy what they see.
Save repeated tries for everyday foods: many children need 10 or more tries before they accept a new food.

Never force or pressure your baby to eat. Some days they'll eat more, some days less, and that's normal.

Buying and storing miso

Keep miso in the fridge once opened, out of your child's reach, and follow the label for how long it keeps.
Cooked dishes and soups made with miso keep for 3 to 4 days in a covered container in the fridge. Soups can be frozen for 2 to 3 months. Reheat only once, to a rolling boil or 165°F (74°C), then let them cool before serving.
Rice dishes are the exception: cool them within 1 hour, keep them in the fridge for no more than 1 day, and reheat them only once.
Throw away any food left out at room temperature for more than 2 hours (1 hour if it's hotter than 90°F / 32°C).

When to talk to your doctor

Contact your pediatrician, GP or health visitor if:

Your child has a soy, wheat or fish allergy, or celiac disease. Ask whether miso, and which kind, is safe for them.
Your child has had any reaction to soy, even a mild one. Stop offering it until you've talked to your pediatrician.
You notice mild signs of an allergic reaction after eating, such as a few hives or a little vomiting. See signs of a reaction.
You're worried about how much your baby eats, their growth, or they refuse most solid food for weeks.

Call 911999your local emergency number (such as 112 in Europe or 000 in Australia) now if your baby has trouble breathing, wheezing, can't cough or cry, has lips, mouth, tongue or throat that suddenly swell, or becomes pale, bluish, floppy or unresponsive. Also call if hives come with repeated vomiting.

Offered miso?

Add it to your first 100 foods.

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