Oysters

Q: When can babies eat oysters?

From around 6 months, once your baby is ready for solids, served in a safe shape and texture for their age.

Never raw for little ones. Cooked through, minced small, and offered as an occasional taste.

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

Quick answer

Babies can eat oysters from around 6 months, once they show signs of being ready for solids. Prepare it as shown below.

From 6 monthsMedium choking risk as servedAllergen: Shellfish

How to serve oysters by age

6 months+

Minced cooked oyster mixed into soft food

Cook oysters fully (see the steps below), take the meat out of the shells, then mince it very finely and stir about a teaspoon into a soft food your baby already eats, now and then. Never serve oysters raw or lightly cooked. Canned and smoked oysters wait until 12 months.

Size: A teaspoon of finely minced oyster stirred into mashed potato, rice or a soft vegetable mash.
Check before serving: Rub the minced oyster between your fingers before mixing it in: you shouldn't feel any grit, bits of shell or chewy lumps.

US and UK advice differ here. The AAP suggests mashed food or soft pieces no larger than ½ inch; the NHS suggests soft finger-sized pieces your baby can hold in their fist. Both agree the food must squash easily.

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 oysters

1
Buy live oysters from a shop that keeps the harvest tag, or shucked oysters in a sealed tub. Throw away any with cracked or broken shells, and any live oysters that don't close when you tap them (FDA).
2
Scrub the shells under cold running water, keep raw oysters and their juices away from other food, and wash your hands after handling them.
3
Cook them through, as the CDC advises: in the shell, boil until the shells open and keep boiling for another 3 to 5 minutes, or steam for another 4 to 9 minutes once the steamer is already steaming, and throw away any that don't open. Shucked oysters: boil for at least 3 minutes, or bake at 450°F (230°C) for 10 minutes. Don't add salt.
4
Let them cool, take the meat out of the shells, check for grit and shell, and mince finely (6 months) or chop small (9 months+).
5
First time? Pick a day your baby is well, at home, when you can watch them for a couple of hours afterward.

How much to offer

For the very first taste, offer a small amount: a teaspoon of minced oyster mixed into a food your baby already eats. Oysters are very high in zinc (see the note on zinc below), so our suggestion is to keep them to about a teaspoon now and then, at every age, not a regular food. Canned and smoked oysters wait until 12 months, then at most half a teaspoon. For regular shellfish meals, clams, mussels, shrimp or crab are easier choices. Your baby decides how much to eat.

Common mistakes

Serving raw oysters

Never give babies or children raw or lightly cooked oysters. The NHS says raw oysters can carry viruses such as norovirus, and to avoid giving raw shellfish to babies and children. The CDC says most Vibrio infections come from eating raw or undercooked shellfish, especially oysters, and the FDA says children should avoid raw oysters even if they were treated after harvest.

Offering oysters often

FoodData Central lists about 33 to 79 mg of zinc per 100 g of cooked oysters, depending on the type, and about 91 mg for canned eastern oysters. NIH sets an upper limit of 4 mg of zinc a day from all food for babies up to 6 months, 5 mg at 7 to 12 months and 7 mg at 1 to 3 years, so a single teaspoon (about 5 g) of cooked oyster can give about 1.7 to 3.9 mg, and a teaspoon of canned oyster about 4.5 mg. Keep cooked oysters to about a teaspoon now and then, and wait until 12 months for canned or smoked oysters, then at most half a teaspoon.

Serving oysters whole

Cooked oysters are slippery and chewy, and the CDC lists tough or large chunks of meat as a choking hazard. Mince them for babies and chop them small for toddlers.

Using smoked canned oysters

Smoked canned oysters can be much saltier than plain cooked oysters: FoodData Central lists about 790 mg of sodium per 100 g for one brand (about 2 g of salt), against about 170 to 210 mg (about 0.4 to 0.5 g of salt) for plain cooked oysters. The NHS says babies under 1 should have less than 1 g of salt a day. Use plain cooked oysters for your baby, keep smoked oysters until 12 months (then at most half a teaspoon), and keep oyster sauce, which is very salty, out of their food.

Where US and UK guidance differ on oysters

United States(AAP and CDC)Your setting

The FDA says children should avoid raw oysters, even if they were treated after harvest, and the CDC lists raw or undercooked shellfish as a riskier choice for children under 5. Oysters are on the FDA's 'Best choices' list for low mercury. In the US, mollusks like oysters don't have to be named as an allergen on food labels.

United Kingdom(NHS)Your setting

The NHS says shellfish such as oysters that are raw or not thoroughly cooked can cause food poisoning, and to avoid giving raw shellfish to babies and children. The NHS sets no maximum for oysters.

We cover US and UK guidance in detail. Elsewhere, check your national health service's advice too.

Questions parents ask

Can oysters be a choking hazard for babies?

Whole cooked oysters are slippery and chewy, and a choking risk for young children. Mince them for babies and cut them into small pieces for toddlers. Take every oyster out of its shell and check for grit and bits of shell. Never offer raw or undercooked oysters. Stay with your child during meals.

Can babies be allergic to oysters?

Shellfish is a common allergen. Oysters are mollusks, not crustaceans like shrimp, crab and lobster. The ACAAI says crustaceans cause the most shellfish reactions and many people with a shellfish allergy can eat mollusks such as oysters, but anyone who has reacted to shellfish should see an allergist before eating any other kind. Shellfish can be introduced from around 6 months, like other foods: start with a small amount on its own and watch for signs of a reaction. A shellfish allergy is different from a fish allergy: one doesn't mean the other. In the US, food labels must name crustacean shellfish but not mollusks such as oysters (ACAAI), so oyster sauce may not flag them; UK labels must show oyster products as 'oyster (mollusc)' (FSA). Read the whole ingredient list. Oysters can also carry toxins that cooking doesn't destroy (NHS), and the CDC says shellfish usually pick these up during or after algae blooms. If you hear that local waters have had an algae bloom or 'red tide' warning, don't serve shellfish from there. If your child has breathing trouble, swelling of the face, lips or tongue, seems confused, or becomes floppy after eating oysters, call your emergency number. For vomiting, diarrhea, numbness or tingling, or if they seem unwell within a few hours of eating oysters, get medical care right away.

Are oysters healthy for babies?

Very high in zinc and vitamin B12: FoodData Central lists about 33 mg of zinc and 29 µg of vitamin B12 per 100 g of cooked Pacific oysters. They also have iron (about 9 mg per 100 g), but because oysters are best kept to about a teaspoon, a baby's portion gives well under 1 mg. The NHS names oysters as one of the main shellfish sources of omega-3 fats, though they have less than oily fish.

When can babies eat oysters?

From around 6 months, fully cooked, taken out of the shell and minced finely, about a teaspoon now and then. Canned and smoked oysters wait until 12 months. The CDC lists shellfish among the allergenic foods to introduce when you introduce other foods. Raw oysters are never safe for babies or young children.

Can babies eat canned oysters?

Not before 12 months. Canned oysters are even higher in zinc than fresh: FoodData Central lists about 91 mg per 100 g for canned eastern oysters, so a teaspoon has about 4.5 mg, close to a baby's whole daily upper limit on its own. From 12 months, offer at most half a teaspoon now and then. Plain canned oysters are already cooked: drain them, mince them finely and heat them in your dish until steaming hot, 165°F (74°C), then let it cool. Smoked oysters and oysters in oil or sauce are saltier, so plain ones are the better choice.

When can children eat raw oysters?

Not as young children. The CDC lists raw or undercooked shellfish as a riskier choice for children under 5, the FDA says children should avoid raw oysters, and the NHS says to avoid giving raw shellfish to babies and children. Ask your pediatrician before offering raw oysters to an older child.

Are oysters high in mercury?

No. Oysters are on the FDA's 'Best choices' list and among the seafood it names as even lower in mercury.

If your baby refuses oysters

Many babies need 10 or more tries before they accept a new food. Keep offering it alongside foods they already like.
Mix minced oyster into foods your baby already likes, such as rice, pasta or mashed potato.
Oysters have a strong taste. A very small amount stirred into a soft food is easier to accept.
If your baby keeps refusing oysters, offer another shellfish such as clams, mussels or shrimp instead.

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

Buying and storing oysters

Put live oysters in the fridge as soon as you get home, covered but not in an airtight container and not in water: they need to breathe (NHS). Cook them within 2 days, and keep shucked oysters in the fridge by their use-by date.
Cooked oysters keep for 3 to 4 days in a covered container in the fridge. Reheat them only once, to 165°F (74°C), until steaming hot, 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 baby has had any reaction to oysters, even a mild one. Stop offering them, and talk to your pediatrician before trying other shellfish such as clams, mussels or shrimp.
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 oysters?

Add it to your first 100 foods.

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