Put the familiar food in the basket first
Start with the foods they already eat. Then add the one new food you plan to offer.

Yes first
If the shop is rushed, leave with the familiar food. A new food can wait for the next trip.
The banana, the rice, the bread they accept: those go in the basket before you look at anything interesting.
One new food, not a project
Add a single food you will serve beside the yes. A bag of peas, a few carrots, a tin of beans.
A trolley of projects becomes guilt by Thursday. One new food is a plan.
Check the label when it matters
A sauce, a bread, or a ready meal can hide milk, egg, or wheat. If that allergy is saved, read the label or leave it.
This page cannot tell you a package is safe. When you are unsure, leave it on the shelf.
A sentence you can say
“Familiar food first. One new thing if we have time.”