Editing Chestnut (section)

=== Nutrition ===
{{nutritional value|name=Chestnuts (raw,
peeled)|kJ=820|fat=1.3&nbsp;g|protein=1.6&nbsp;g |
carbs=28&nbsp;g|sugars=11&nbsp;g|vitA_ug=1|vitC_mg=40.2|vitB6_mg=0.352|vitB12_ug=0|thiamin_mg=0.144|riboflavin_mg=0.016|niacin_mg=1.102|folate_ug=58|sodium_mg=2|potassium_mg=484 |calcium_mg=19|iron_mg=0.94|phosphorus_mg=38|magnesium_mg=30|zinc_mg=0.49|manganese_mg=0.34 |copper_mg=0.42|water=60.21&nbsp;g|source_usda=1}}

Chestnuts depart from the norm for [[Nut (fruit)|culinary nuts]], as they have little protein or fat; their calories come chiefly from carbohydrates. Fresh chestnut fruits provide about {{convert|820|kJ|kcal|abbr=on}} of [[food energy]] per 100&nbsp;g of edible parts, which is much lower than [[walnut]]s, [[almond]]s, other nuts, and dried fruit (about {{convert|600|kcal|kJ|order=flip|abbr=on|disp=or}} per 100&nbsp;g).<ref name=mugello/><ref name=chestnutbrooknutrition>[http://www.chestnutbrook.com.au/chestnuts-nutritional-value.html ''Chestnut – Nutritional value''] {{Webarchive|url=https://web.archive.org/web/20080719055212/http://chestnutbrook.com.au/chestnuts-nutritional-value.html |date=2008-07-19 }}. Information page by a small Australian grower in [[Balingup, Western Australia]].</ref><ref name=nzcouncil/>

In some areas, sweet chestnut trees are called "bread trees".<ref name=mugello/><ref name=rockridgemarket>[http://rockridgemarkethall.com/index.php?option=com_content&task=view&id=123&Itemid=107 ''The Chestnut – Fruit of the Bread Tree'']. Rockridge Market Hall.</ref> When chestnuts are just starting to [[Ripening|ripen]], the fruits are mostly starch and are firm under finger pressure from the high water content. As the chestnuts ripen, the starch is slowly converted into [[Sugar#Chemistry|sugars]], and moisture content decreases. Upon pressing the ripe chestnut, a slight "give" can be felt; the [[husk|hull]] is not so tense, and space occurs between the flesh of the fruit and it.<ref name=delmarvelous>[http://www.buychestnuts.com/trees.htm Delmarvelous nursery] (Chestnut Trees & Seed Nuts).</ref>

Raw chestnuts are 60% water and contain 44 grams of [[carbohydrate]]s, 2 grams of [[protein (nutrient)|protein]], one gram of [[fat]], supplying 200 [[calorie]]s in a 100-gram reference amount (table). Chestnuts provide some [[B vitamins]] and [[dietary mineral]]s in significant content (table).

Their carbohydrate content compares with that of wheat and rice.<ref name=valnet/> Chestnuts have twice as much [[starch]] as the potato on an as-is basis.<ref name=peggy/> They contain about 8% of various [[sugar]]s, mainly [[sucrose]], [[glucose]], [[fructose]], and in lesser amounts, [[stachyose]] and [[raffinose]], which are fermented in the lower gut, producing gas.<ref name=fao/>

Chestnuts are among the few "nuts" that contain [[vitamin C]], with 48% of the [[Daily Value]] in a 100-gram serving (table). The amount of vitamin C decreases by roughly 40% upon heating (typically, the vitamin is decreased or destroyed in heated foods). Fresh chestnuts contain about 52% water by weight, which evaporates relatively quickly during storage. They can lose as much as 1% of weight in one day at 20&nbsp;°C (68&nbsp;°F) and 70% [[relative humidity]].<ref name="fao"/>[[Image:Kestaneci chestnut vendor.jpg|right|thumb|A ''kestaneci'' or chestnut vendor in [[Istanbul]]]]
[[Image:Chestnuts roasted.jpg|right|thumb|Roasted chestnuts in [[Melbourne]], Australia]]