Weeks 4–5 of Baby GAPS add two foods: raw organic egg yolk and cooked apple. Egg yolk begins at 1 teaspoon per day after the served-form wrist test. Cooked apple waits until the earlier foods are tolerated, then begins with a few spoonfuls per day.[1]
We began Baby GAPS with our youngest on September 20, 2026, and this is our first time following the baby sequence. These two weeks add yolk and cooked apple to the foods already established.
Continue the Earlier Weeks
Continue the established foods from Week 1, Week 2 and Week 3. That includes the baby’s established meat stock, vegetable soup, probiotic-food route, soft meat, liver, fish and avocado. Weeks 4–5 add raw yolk and cooked apple to that base rather than replacing it.[1]
The complete Baby GAPS first-food guide shows the full sequence before and after this two-week window.
Weeks 4–5 at a Glance
| Addition | Starting Point | How It Progresses |
|---|---|---|
| Raw organic egg yolk | 1 teaspoon per day after the raw-yolk wrist test | Increase gradually until yolk is added to every soup or puree |
| Cooked apple | A few spoonfuls per day after all earlier foods are tolerated | Watch for a response such as loose stool, then increase gradually when tolerated |
Test Raw Yolk in the Form It Will Be Served
The New Baby chapter uses raw organic egg yolk in Weeks 4–5. Before serving it, perform the overnight wrist test with raw yolk itself. Do not substitute whole egg or cooked egg for the test, because the source says to test each food in the same form in which it will be introduced.[1]
The Baby GAPS wrist-test guide keeps the overnight method and the wait-before-retry route together. A clear wrist spot does not rule out food allergy. Follow the baby’s allergy plan.[2]
Introduce Raw Organic Egg Yolk
Begin with 1 teaspoon of raw yolk per day. Mix it into an established soup or vegetable puree without cooking it. If there is no reaction, increase the amount gradually until raw yolk is included with every soup or puree.[1] For uncooked servings, FDA recommends eggs pasteurized to destroy Salmonella.[3]
Separate the yolk from the white. Egg is included in the Weeks 8–9 pancake; a separate scrambled-egg or omelet meal comes in Week 10 and beyond. Raw yolk now does not move the cooked white or whole egg into Weeks 4–5.[1]
Wait Until Earlier Foods Are Tolerated Before Apple
Cooked apple does not begin on a fixed calendar day. The source places it after the baby tolerates the foods introduced so far. Wait until those foods are going well before adding apple, even if that takes longer than the printed week.[1]
Prepare the Cooked Apple
Use cooking apples. Peel and core them, then cook them in a little water until soft. Once they are cooked, add a generous amount of butter, coconut oil or ghee.[1]
Begin with a few spoonfuls per day. Watch for a response, including loose stool. When the apple is tolerated, increase the amount gradually.[1]
Use the Full Two-Week Window
The book groups these additions under Weeks 4 and 5. It does not divide yolk into one exact week and apple into the other. Use the full window to test, introduce and gradually increase one food clearly before adding the second.[1]
A short record helps here because both foods have a clear prepared form. Write down raw yolk separately from whole egg, and cooked apple separately from raw apple or fresh apple juice. Record the amount and what followed.
Keep Each New Food Clear
My Baby Feeding Chart + Reaction Log brings together the food, prepared form, amount, timing, and response. It is listed in the WFLI shop.
What If a New Food Causes a Response?
The New Baby chapter’s general rule is to remove a food that brings loose stool, constipation, a new skin rash or a sudden eczema flare, wait a few weeks and try it again. That route applies to the specific food and form being introduced. It does not move every other established food backward automatically.[1]
What Waits for Weeks 6 and 7
Weeks 6 and 7 increase tolerated homemade yogurt or cultured sour cream to 3 teaspoons with each meal, raw yolk to two per day and the amount of soft meat, especially gelatinous meat from around joints and bones. That is also where the book describes formula ending while breastfeeding continues. For an individual baby, keep milk feeds adequate and discuss any reduction through the baby’s feeding plan.[4][1]
Continue with Weeks 6 and 7 of GAPS Weaning for those increases.
Frequently Asked Questions
Is Whole Egg Introduced Now?
No. Weeks 4–5 use yolk only. Egg becomes an ingredient in the Weeks 8–9 pancake before the separate scrambled-egg or omelet meal in Week 10 and beyond.[1]
Does Cooked Apple Start on a Fixed Day?
No. The source begins cooked apple after all foods introduced so far are tolerated. It does not assign a numbered day.[1]
What If Cooked Apple Loosens Stool?
Loose stool is one response the apple passage tells you to watch for. Use the book’s general response route: remove the apple, wait a few weeks and try it again rather than continuing to increase it.[1]
Can I Use Raw Apple Instead?
No. Weeks 4–5 specify peeled, cored apple cooked soft in a little water with added butter, coconut oil or ghee. Raw fruit comes later in the sequence.[1]
References
- Campbell-McBride, Natasha. GAPS: Gut and Psychology Syndrome, expanded second German edition (2015), Part 4, “New Baby,” “Introducing Solid Foods,” Weeks 4 and 5.
- American Academy of Allergy, Asthma & Immunology. Allergy Testing.
- U.S. Food and Drug Administration. What You Need to Know About Egg Safety.
- Centers for Disease Control and Prevention. How Much and How Often To Feed.
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