A recipe app could combine chosen dishes into a shopping list, grouping matching ingredients and adjusting quantities for the intended servings. Ingredient naming and measurement rules need careful design for the list to be useful.
Users should be able to mark pantry items and edit substitutions. A change of portion size may not suit every recipe equally, so automatic scaling should be reviewable. Recipe content and photographs require appropriate rights.
Start with a small, consistent recipe collection and test mixed units, repeated ingredients and optional components. Keep allergen and dietary labels grounded in reviewed information. The app can help organise cooking and shopping without presenting ingredient matching as a guarantee that a recipe is suitable for every person's dietary requirements.
Related reading: Restaurant and Catering Software Solutions.