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Why do we need an ingredients ontology? The ontology describes how ingredients are derived from each other and how ingredients can be combined into new ingredients. An ontology might be useful to:
 
Why do we need an ingredients ontology? The ontology describes how ingredients are derived from each other and how ingredients can be combined into new ingredients. An ontology might be useful to:
 
* find hidden ingredients - an ingredient might contain hidden ingredients, the ontology might reveal these. For example [https://world.openfoodfacts.org/ingredient/butter butter] contains [https://world.openfoodfacts.org/ingredient/butterfat butterfat].
 
* find hidden ingredients - an ingredient might contain hidden ingredients, the ontology might reveal these. For example [https://world.openfoodfacts.org/ingredient/butter butter] contains [https://world.openfoodfacts.org/ingredient/butterfat butterfat].
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* reveal processed ingredients - often an ingredient is derived from an other ingredient through some process. We can make explicit what these processes are. Example [https://world.openfoodfacts.org/ingredient/clarified-butter clarified butter] is created from [https://world.openfoodfacts.org/ingredient/butter butter] by separating the [https://world.openfoodfacts.org/ingredient/milk-solids milk solids] and [https://world.openfoodfacts.org/ingredient/water water] from the [https://world.openfoodfacts.org/ingredient/butterfat butterfat].
    
=== Theory ===
 
=== Theory ===
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