Step 1: First tiny taste
Offer a small taste of soy sauce mixed into a smooth mash. Watch for concerning symptoms such as hives, swelling, vomiting, or breathing trouble, and seek urgent care if those occur.
Soy Sauce
Overview
Soy sauce is typically made from soy and wheat, which are priority allergens. Soy and wheat can be introduced with other complementary foods around 6 months. Offer a small amount mixed into an age-safe mash as a single new food. If your baby has severe eczema or a prior immediate food allergy, talk with a clinician before introducing highly allergenic foods.
Preparation
Use plain soy sauce. Mix a small amount into a well-cooked mash until smooth and easy to swallow from a spoon. Do not offer it from a bottle. Always supervise eating.
Three-step introduction
Step 2: Larger offer
If the first taste was tolerated, gradually offer a larger amount of the same preparation at a later feed.
Step 3: Include regularly
If tolerated, keep this food in the diet routinely as part of complementary feeding.
FAQ
When are babies usually ready for solid foods?
Complementary foods are typically introduced around 6 months of age, when the baby shows developmental readiness (for example, sitting with support, good head control, and swallowing food rather than pushing it out). Introducing solids before 4 months is not recommended.
When can soy sauce be introduced?
Once your baby is ready for solid foods (typically around 6 months), soy and wheat foods such as typical soy sauce can be introduced with other complementary foods. There is no evidence that delaying common allergens such as soy or wheat prevents allergy.
How should I prepare soy sauce for a baby?
Use plain soy sauce. Mix a small amount into a well-cooked mash until smooth and easy to swallow from a spoon. Do not offer it from a bottle. Always supervise eating.
Does soy sauce contain wheat?
Typical soy sauce (shoyu) is made from soy and wheat. Wheat-free tamari is a different product. Wheat and other gluten-containing cereals are listed as priority allergens.
What if my baby has severe eczema or a prior food allergy?
If your baby has severe, persistent eczema or had an immediate allergic reaction to a food — especially a highly allergenic food — talk with your child’s pediatrician about how and when to introduce highly allergenic complementary foods such as soy sauce and other soy or wheat foods.
Sources
- WHO Guideline for complementary feeding of infants and young children 6–23 months of age (2023)
- CDC — When, What, and How to Introduce Solid Foods
- FAO/WHO — Risk assessment of food allergens: Part 1 (Codex priority allergen list)
- FDA — Food Allergies (major food allergens / Big 9)
- AAP HealthyChildren — When to Introduce Egg, Peanut Butter & Other Common Food Allergens
- CDC — Infant and Toddler Nutrition FAQs