Allergen flags whether an ingredient is a common trigger for food allergies or intolerance. Pizza dough, Wikipedia notes, is "leavened wheat-based dough," and wheat is one of the ingredients most often linked to allergy and gluten intolerance. Browsing by allergen helps a visitor find or avoid ingredients that share the same risk.
Facts
Comparison
Era of EmergenceSourced to the subject's own account Allergen
Sources
1. Vegetable (Wikipedia)
WikipediaVegetable, Cultivation history sectionQuote, Vegetable, Cultivation history section
It is likely that various peoples around the world started growing crops in the period 10,000 BC to 7,000 BC.
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