Editing Onion (section)

=== Nutrients ===

{{nutritional value |name=Raw onion bulbs
|water=89.11 g
|kJ=166
|protein=1.1 g
|fat=0.1 g
|carbs=9.34 g
|fibre=1.7 g
|sugars=4.24 g
|calcium_mg=23
|iron_mg=0.21
|magnesium_mg=10
|phosphorus_mg=29
|potassium_mg=146
|zinc_mg=0.17
|manganese_mg=0.129
|vitC_mg=7.4
|thiamin_mg=0.046
|riboflavin_mg=0.027
|niacin_mg=0.116
|pantothenic_mg=0.123
|vitB6_mg=0.12
|folate_ug=19
|opt1n=[[Fluoride]]
|opt1v=1.1 µg
|source_usda=1
|note=[https://fdc.nal.usda.gov/fdc-app.html#/food-details/170000/nutrients Link to USDA Database entry]
}}

Most onion cultivars are about 89% water, 9% [[carbohydrate]]s (including 4% sugar and 2% [[dietary fiber|dietary fibre]]), 1% [[dietary protein|protein]], and negligible [[fat]] (table). Onions contain low amounts of [[essential nutrient]]s and have an energy value of 166 kJ (40 [[kilocalorie]]s) in a 100&nbsp;g (3.5&nbsp;oz) amount. Onions contribute savoury flavour to dishes without contributing significant caloric content.<ref name=NOA/>