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Products related to a barcode change over time. The product might be replaced by something else, the ingredients and/or nutritional values change or it might be just the layout of the packaging that has been changed. This propery intends to record these changes.
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Garlic is for a group of people a severe allergen. Unfortunately the ingredient list is not enough to determine whether a product contains garlic. Garlic might be hidden in spices or herbs. People with this allergy contact producers to get certainty. They may use this tag to register those responses. Ideally a (screen) copy of this respons is also uploaded as image to the product.
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This property identifies whether the product contains hidden garlic.
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This property identifies the number of evolutions the product/packaging went through. This will be evident from the product images.
   
==Usage==
 
==Usage==
'''evolutions=5'''
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'''ingredient:garlic=yes'''
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The property '''evolutions''' is followed by a positive integer.
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The property '''ingredient:garlic''' is followed by a boolean (yes/no).
    
==See also==
 
==See also==
* [https://forum.openfoodfacts.org/t/product-evolution-support/76/2 Forum discussion]
      
[[Category:Property]]
 
[[Category:Property]]
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