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A Map of the Four Stages of Solid Foods — Texture, Volume, and Ingredients at Each Step

By Leon MoriguchiPublished May 15, 2026Updated May 18, 20266 min read日本語版あり
Audience
Parents of infants 4–18 months beginning or progressing through complementary feeding

TL;DR

  • ·The four stages of solid feeding track the maturation of oral motor function — swallowing, tongue-mashing, gum-chewing, and finally molars — not a calendar, making developmental readiness cues more reliable than age-in-months alone
  • ·Delaying lumpy textures beyond nine months is associated with significantly higher rates of food acceptance difficulty at age seven, making timely texture progression a long-term dietary stake, not just a feeding preference
  • ·Early introduction of allergenic foods and intentional iron-rich foods from Stage 2 onward reflect current international consensus from WHO, ESPGHAN, and MHLW guidelines

Contents

  1. Lead
  2. The Two Purposes of Solid Feeding
  3. Stage-by-Stage Guide
  4. Stage 1 (around 5–6 months) — Learning to swallow
  5. Stage 2 (around 7–8 months) — Mashing with the tongue
  6. Stage 3 (around 9–11 months) — Gum-chewing begins
  7. Stage 4 (around 12–18 months) — Joining the family table
  8. Three Principles for Putting This into Practice
  9. Summary
  10. References

Lead

When to start is settled. Now what?

Solid feeding has four stages. Parents hear the labels — early, middle, late, and transitional — but the question "why this order, and what specifically changes?" rarely gets a clear answer. Navigating by age-in-months alone leads either to advancing texture before the child is ready, or to staying with purees long past the point when progression was warranted.

This article organizes the four stages around the developmental logic that underlies them: the sequence in which oral and chewing function matures. Age ranges are rough guides. The actual decision to move forward should be based on developmental readiness cues — a principle consistent across the WHO Complementary Feeding Guidance [1], the 2017 ESPGHAN: European Society for Paediatric Gastroenterology, Hepatology, and Nutrition, a leading authority on infant nutrition guidelines position paper [2], and Japan's Ministry of Health, Labour and Welfare (MHLW) Breastfeeding and Weaning Support Guidelines (2019 revision, hereafter "MHLW 2019") [3].

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In the memori app

The memori app keeps the accumulation of feeds and meals in a form you can read back later.

  • Nursing, pumping and bottles run on a timer, with side and volume recorded alongside.
  • Solids build up into a list of what's been eaten, so a first-time food is easy to spot.
  • Height, weight and head circumference are drawn over national reference curves.
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