In case you want to swap one of your meals and find something else with the specific ingredient, you can do so.
1. Go to the Meal Plan in the app.
Decide what meal you want to replace, and press Swap:
2. Use the search bar to put your needed ingredient:
3. Choose one of the meals from the search results, tap it, and press Select:
4. Tap the days when you want to eat this dish. It can be only today, or you can choose a few days or even the whole week or two at once. Press Apply:
5. The meal will appear in the Meal plan.
You can also overview your meals for a couple of days or a week and swap any meal from there. Press the calendar icon, choose the period (for example, tap the first day and the last day of the upcoming week, and it will be highlighted green), and then press Apply:
You will see the plan for the week sorted by Breakfasts, Snacks (if you have them in your plan), Lunches, and Dinners. Press the grey arrow to view the list of meals for each day:
From there, you can swap any dish: