Starting Solids: A Simple Guide for Your Baby’s First Foods

Before the tracker, before the meal rotation, before any of the logistics — there’s a simpler question most parents want answered first: is my baby actually ready, and what do I even give them on day one? Here’s the foundational version, without the extra layers.

Signs of readiness

Age is a rough guide, not the real signal. Most babies show readiness somewhere between 4 and 6 months, and the signs matter more than the exact week:

• Can sit upright with minimal support and hold their head steady
• Has lost the tongue-thrust reflex that pushes food back out automatically
• Shows real interest in food — watching you eat, reaching, opening their mouth
• Can move food to the back of the mouth and swallow, rather than just gagging it forward

If most of these aren’t there yet, it’s fine to wait a few more weeks and try again — there’s no advantage to starting earlier than a baby is ready.

What to actually try first

The old advice to start with rice cereal has mostly given way to a simpler idea: single-ingredient foods, soft enough to mash between two fingers, introduced one at a time. Common first foods include mashed avocado, mashed banana, well-cooked and pureed sweet potato, and iron-fortified infant cereal mixed with breast milk or formula.

Iron matters more than people expect at this stage — a baby’s natural iron stores from birth start to run low around 6 months, so iron-rich first foods (fortified cereal, pureed meat, lentils) are worth prioritizing early, not treating as an afterthought.

Introducing potential allergens

Guidance here has shifted in recent years: rather than delaying common allergens, current pediatric guidance generally supports introducing them earlier, one at a time, in age-appropriate forms — think a thin smear of peanut butter mixed into puree, not whole nuts.

What “one at a time” actually means in practice

Introduce a new single-ingredient food and wait 2-3 days before adding another, watching for any reaction — rash, vomiting, unusual fussiness. This isn’t about being fearful; it’s just about being able to identify the cause quickly if something does come up.

How much to expect them to actually eat

Not much, at first — and that’s normal. In the early weeks of solids, breast milk or formula is still the primary source of nutrition. Think of these first meals as practice with taste and texture, not a replacement for milk feeds. Appetite and interest typically ramp up gradually over the following months.

Once the basics feel comfortable, that’s usually when the real logistics questions show up — what to make for a week without reinventing every meal, how to track reactions without overthinking it. That’s exactly what the follow-up guide on this site covers, if you want the next layer once you’re past the first-foods stage.