New field: precise / detailed ingredients list with exact quantity, origins and labels of all input ingredients in g instead of %

[stephanegigandet]

What

• The current ingredients_text_[lc] field contains the ingredients list as it appears on packaging. For some uses (like computing an environmental impact score like the Eco-Score), it would be very useful to have a more precise and more structured ingredients list.
• We could for instance introduce a detailed_ingredients_text_[lc] field that would enable producers to send us:
  • the exact amount of grams of each ingredient used (and not the % in the finished product, so that we know if 150 g of meat were necessary to make 100g of dry salami)
  • the origins of each ingredients.
• We could have a format like this, with 1 ingredient per line, and only child ingredients (not parent ingredients)
  • [quantity?] [label?] [ingredient] [label?] : [origin1, origin2?]
  • e.g.
    • 150g organic beef meat: Germany, Austria
    • 5g salt: France
• Using a text format instead of something more structured would make it easier for producers to send us whatever data they can collect. i.e. labels, origins would be recommended but optional. In that respect, it would be similar to the packaging_text_[lc] field we have today.

Part of

• Add more ingredient analysis (tracker) #5706

[github-actions]

This issue has been open 90 days with no activity. Can you give it a little love by linking it to a parent issue, adding relevant labels and projets, creating a mockup if applicable, adding code pointers from https://github.com/openfoodfacts/openfoodfacts-server/blob/main/.github/labeler.yml, giving it a priority, editing the original issue to have a more comprehensive description… Thank you very much for your contribution to 🍊 Open Food Facts