Iron-rich foods should be among the very first purees you offer your baby. Around 6 months of age, the iron stores babies are born with start running low, and breast milk alone can’t keep up with demand. That makes iron-fortified infant cereal, pureed meats, and well-cooked legumes the top priorities for early meals, not the traditional rice cereal or plain fruit that previous generations started with.
When Your Baby Is Ready
Most babies are ready to start solids around 6 months, though every child hits the milestones at a slightly different pace. Starting before 4 months is not recommended. Rather than watching the calendar, watch your baby for these physical signs: they can sit up with support and hold their head steady, they open their mouth when food is offered, and they swallow food instead of pushing it back out with their tongue. That tongue-push reflex is a built-in safety mechanism in younger babies. Once it fades and your baby can move food from the front of the tongue to the back to swallow, they’re physically ready for purees.
Why Iron-Rich Foods Come First
Babies are born with iron reserves passed along during pregnancy, but those stores deplete significantly by the second half of the first year. Research shows that a substantial portion of breastfed infants have iron intakes below recommended levels during this period, with some studies finding 27 to 41 percent of infants falling short. Iron is critical for brain development, so the first foods you introduce should directly address that gap.
The best iron-rich first purees include:
- Pureed meat: Beef, chicken, turkey, pork, and lamb are the most easily absorbed sources of iron. Slow-cook or pressure-cook the meat until very tender, then blend with a little breast milk, formula, or water until smooth.
- Iron-fortified infant cereal: Single-grain oat or barley cereal mixed thin with breast milk or formula is a classic starter and a reliable iron source.
- Pureed legumes: Lentils, split peas, chickpeas, and beans are excellent plant-based options. Cook them until very soft and blend smooth.
- Eggs: Once considered a “wait until later” food, well-cooked eggs (including the yolk) are now encouraged early.
- Tofu: Soft or silken tofu blends easily and provides both iron and protein.
You don’t need to start with bland rice cereal or applesauce. There is no evidence that babies need to begin with fruits or mild vegetables before moving to protein. Offering iron-rich foods at least twice a day from the start gives your baby the best nutritional foundation.
Best Vegetables and Fruits to Offer Early
Once iron-rich foods are part of the rotation, vegetables and fruits round out the diet. Good early vegetable purees include sweet potato, butternut squash, carrot, peas, broccoli, cauliflower, zucchini, and potato. These are all relatively low in nitrates and easy to cook soft enough for a smooth puree. Fruits like banana, avocado, pear, peach, and cooked apple blend well and are naturally appealing to babies.
Some leafy greens, particularly spinach and certain Asian brassicas like Shanghai cabbage, contain much higher levels of nitrates. These aren’t off-limits, but they shouldn’t be a staple at the very beginning. If you do offer high-nitrate greens, blanching them in boiling water for one to three minutes and discarding the cooking water reduces the nitrate content. Sticking with root vegetables, squashes, and fruiting vegetables (like tomato and sweet corn) keeps things simple early on.
A common worry is that starting with fruits will give babies a “sweet tooth” and make them reject vegetables. There’s no strong evidence for this. Babies are born preferring sweet flavors regardless. Offering a variety of vegetables early and often matters more than the exact order.
Introducing Allergens Early
Current guidelines encourage introducing common allergens like peanut, egg, tree nuts, dairy, wheat, soy, fish, and sesame during the first year, ideally soon after starting solids. This is a significant shift from older advice that recommended delaying these foods. Research now shows that early introduction, particularly of peanut and egg, can reduce the risk of developing allergies.
For peanut, the safest approach for young babies is mixing a small amount of smooth peanut butter into a puree or thinning it with warm water. Never offer a thick glob of peanut butter on its own, as it’s a choking hazard. Peanut puff snacks designed for babies can also be softened with water for infants under 7 months. For egg, start with a small amount of well-cooked scrambled egg blended into a puree. Offer the allergen, then watch for any reaction over the next couple of hours.
How Much to Offer at First
Start with just 1 to 2 tablespoons of puree per sitting. In the first few weeks, solid food is practice, not a primary calorie source. Breast milk or formula still provides the bulk of nutrition. Your baby may eat only a few bites and lose interest, which is completely normal. Over the following weeks, gradually increase the amount and frequency until your baby is eating roughly three small meals a day with a couple of snacks, spaced every 2 to 3 hours.
Let your baby set the pace. Open-mouth eagerness means they want more. Turning away, clamping the mouth shut, or losing interest means the meal is over. Forcing extra bites teaches babies to ignore their own fullness cues.
Spacing New Foods: The 3-Day Rule
You may have heard that you should wait 3 to 5 days between each new food to watch for allergic reactions. This has been standard advice from the AAP and CDC for years, but it’s increasingly being questioned. In a survey of 563 pediatric practitioners published in JAMA Network Open, nearly two-thirds recommended waiting less than three days, and only half felt the waiting period was helpful for families.
The reasoning is simple: food allergy symptoms typically appear within minutes to a few hours of eating, not days later. Stretching out introductions too long limits dietary variety and can delay the introduction of important allergens like peanut. A practical middle ground is to introduce one new food per day (rather than three or four at once) so that if a reaction occurs, you can identify the likely cause. If a food is well tolerated after a meal or two, there’s little reason to keep offering the same single food for several more days before moving on.
Foods to Avoid Before 12 Months
Honey is the most important restriction. It can contain spores that cause infant botulism, a serious form of food poisoning. Do not add honey to food, water, formula, or a pacifier before your baby’s first birthday. This applies to all forms of honey, including baked goods where honey hasn’t been heated to a high enough temperature.
Cow’s milk should not replace breast milk or formula as a main drink before 12 months. It can cause intestinal bleeding in young babies and contains too much protein and too many minerals for immature kidneys to process efficiently. Small amounts of dairy in cooking or as yogurt and cheese are fine, but the bottle or cup of whole milk as a beverage waits until age one.
Avoid adding salt or sugar to baby food. Babies’ kidneys can’t handle excess sodium, and added sugar contributes calories without nutrition while shaping early taste preferences in unhelpful ways. Processed foods marketed to adults (canned soups, sauces, deli meats) tend to be high in both and aren’t appropriate for babies.
A Sample First-Foods Timeline
There’s no single “correct” order, but a reasonable first two weeks might look like this: start with iron-fortified cereal or pureed meat on day one, then add a vegetable like sweet potato or butternut squash on day two or three. Over the next several days, rotate in new options: pureed chicken, lentils, peas, carrot, avocado, banana, pear. Within the first few weeks, introduce a common allergen like peanut butter thinned into a puree or well-cooked egg. By the end of the first month, aim for a rotation of 10 to 15 foods spanning iron-rich proteins, vegetables, fruits, and at least a couple of major allergens.
The texture can start very smooth and gradually get thicker as your baby gets more comfortable chewing and swallowing. By 8 to 9 months, most babies can handle mashed and soft lumpy textures rather than perfectly smooth purees.