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874 bytes added ,  11:25, 13 March 2020
More on serving size
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==== Serving size ====
 
==== Serving size ====
Serving size has specific goal: to let Open Food Facts app make a proportional calculation of each nutrient per serving size. If a candy's weight is 5 g, it can be chosen as the serving size: if these candies has 66 g of sugar per 100 g, it has about 3 g per candy.
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Serving size has a specific goal: to let Open Food Facts app make a proportional calculation of each nutrient per serving size. If a candy's weight is 5 g, it can be chosen as the serving size: if these candies has 66 g of sugar per 100 g, it has about 3 g per candy. [https://github.com/openfoodfacts/openfoodfacts-server/blob/f25308b7d47255be83210f699f897cba87c9517f/lib/ProductOpener/Food.pm#L3835 Allowed units] are: <code>kg, g, mg, µg, oz, l, dl, cl, ml, fl.oz, fl oz, г, мг, кг, л, дл, кл, мл, 毫克, 公斤, 毫公升, 吨</code>.
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<code>grammes</code>, <code>liter</code>, etc., are NOT recognized.
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Decimals can be written with a comma (<code>,</code>) or a point (<code>.</code>).
    
Good:
 
Good:
* 60 g
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* <code>60 g</code> (preferred, for readability reasons)
* 30g
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* <code>30g</code>
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* <code>35G</code>
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* <code>90 ml</code>
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* <code>1L</code>
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Possible (while not recommanded):
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* <code>cookie 25g</code>
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* <code>One Slice (50g)</code>
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* <code>97 g (0.5 cup)</code>
    
Bad:
 
Bad:
* 30 gr
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* <code>30 gr</code> => <code>gr</code> is not a correct unit
* 9 candies and 2 biscuits
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* <code>9 candies and 2 biscuits</code> => it's not possible to calculate a ratio because we don't know the weight of this portion
* 30
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* <code>30</code> => there is no unit

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