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I want to be able to tag recipes for improving/filtering suggestions. Some categories that need to be tracked:

• Type of meal: Main course, dessert, ...
• Restrictions: Vegetarian, Vegan, Gluten...
• Bonus: Nutritional values See Wiki

Some kind of Tag hierarchy might be useful for the nutrition thing, like Protein > Meat. It shouldn't get overly complex though.

Tags should be designed configurably, so different instances of the app could use different tags. (I.e. if nobody in your household is allergic to gluten, the tag isn't needed and shouldn't clutter up the UI)

On the Suggestion screen:

If you've cooked a recipe without consulting Num and encounter it, you might want to let Num know that you've recently cooked it. For that, a simple date picker could be added like this:

• Cooked today
• Cooked in the last 5 (or so) days
• Cooked longer ago (not sure if this option is even relevant)
• Forget recipe (If you don't want to cook this anymore, ever)

Currently there is only one large list of recipes for all users. Since not everybody likes the same recipes, users should have a personal cookbook to save the recipes into. The Recipe suggestion will then use recipes from the cookbok.

As a bonus, it could rarely suggest something from the global list.

Sometimes it's too tedious to type a recipe into the computer and easier to just save a bunch of photos off the recipe book instead. Currently a title image can be uploaded for a recipe, but it is not formatted to be readable and only one can be saved at a time.

It is convenient to be able to calculate the amount of ingredients needed based on the amount of people. For this to work, an ingredient list is needed in the recipe. This could be added as a list or a free-form text field, where we auto-detect the presence of ingredients with a regex. We also need to store the amount of people the recipe was for initially.

Bonus: Create a shopping list

Currently the images are served with no-cache headers which leads to lots of unnecessary reloads.