Egg Ladder Stages: From Baked Egg to Scrambled Egg

The ladder only makes sense once you know that the same egg behaves differently depending on how it is cooked. The University Hospitals Sussex leaflet puts it plainly: as egg allergy resolves, most children "will start to tolerate highly-cooked/baked egg (such as cakes), followed by lightly-cooked egg (such as pancakes, scrambled egg), and then finally raw egg". Sussex's home reintroduction leaflet starts with a small fairy cake made to its own recipe, one medium egg in 125 g of self-raising flour, baked for 15 minutes at 190°C. The leaflet notes this holds less egg than a normal recipe, and only moves to a two-egg version once the first is tolerated.

That detail changed how we read the whole thing. A muffin from one bakery and a muffin from another are not interchangeable rungs, because the amount of egg and the time in the oven both differ. The recipe is part of the step, which is why the hospital leaflets print their own rather than saying "any cake".

This part we read twice. The British Society for Allergy and Clinical Immunology's 2021 egg allergy guideline says egg allergy usually resolves, and "re-introduction can be achieved at home if reactions have been mild and there is no asthma. Patients with a history of severe reactions or asthma should have reintroduction guided by a specialist."

The NHS leaflets are blunter. Bradford Teaching Hospitals' egg ladder says it is "designed for those children with Non-IgE mediated egg allergy" and "is not to be used by children experiencing anaphylaxis, facial swelling or respiratory symptoms upon consumption of egg." The North West Allergy Network tells parents not to try egg at home if the child has had breathing problems or floppiness after eating it.

None of these is a starting gun a parent can fire. The allergy team decides whether a child suits home reintroduction at all, and which rung to begin on.

The North West Allergy Network's egg ladder has five steps. Step one is baked egg in a flour matrix, such as a fairy cake, a slice of banana bread or dried egg pasta. Step two is baked egg in other foods, like an egg glaze on pastry. Step three is well-cooked whole egg, including a hard-boiled egg or a homemade pancake. Step four is lightly cooked egg: scrambled, soft boiled, fried or an omelette. Step five is undercooked or raw egg, such as fresh mayonnaise, meringue or raw cake mix.

Bradford's version also has five steps but files things differently, with pancakes and Yorkshire puddings on step two and hard-boiled egg on step three. So the leaflets agree on the direction of travel, from baked to raw, and disagree about where a pancake sits. Mixing rungs from two leaflets would scramble the order they were built around.

A reaction on the ladder does not usually mean starting from nothing. The North West Allergy Network asks parents not to stop completely, but to "go back to the previously tolerated stage until further review by your health professional". Bradford's leaflet suggests returning to the previous step and waiting three months before trying again.

Both leaflets also ask for patience between moves. Bradford advises waiting 48 hours before increasing a portion or adding a new food, and introducing one new egg food at a time so it is clear what caused any symptoms. North West asks that the food is given at least three times a week, and that nothing is increased while the child is unwell, has been wheezy recently or has had antihistamine in the last five days. The North West leaflet lists hives, swelling, vomiting, tummy pain, loose stools, a persistent cough, wheeze and floppiness as the symptoms to watch for.

The ladder runs for weeks or months, and the portion sizes change often, from a grain of rice up to a full portion on the North West chart. Reading up on the milk ladder, and keeping our own food notebook through the milk allergy months, taught us that "had some cake on Tuesday" is useless a fortnight later.

If we were logging an egg ladder, each entry would name the exact product or recipe (brand and pack, or "Sussex fairy cake, one egg"), the rung it belongs to, the amount eaten, and the time. Any symptom would get its own time too, because the gap matters. North West notes the ladder can be used for children whose past reactions were delayed skin or gut symptoms, and those can surface hours later; our post on delayed reactions and eczema covers how to line those up. For first-time egg introduction in a baby with no allergy, the egg introduction guide is the better read.