Editing Chestnut (section)

==== Preservation ====
In addition to being consumed fresh, chestnuts can also be canned, pureed, or preserved in sugar or syrup (''marrons glacés''). Shelled and cooked nuts should be covered, refrigerated, and used within 3–4 days. Cooked chestnuts, either whole, chopped, or pureed, may be frozen in an airtight container and held up to 9 months. Because of their high water content, [[transpiration]] rates, and consequent loss weight, the nuts react as fresh fruits (not as nuts). They should be kept cool at all times, including in shops when on display for sale.<ref name="laren60" /> To preserve their freshness for a few months with no artificial refrigeration, the chestnuts can be soaked in cold water for about 20 hours immediately after [[harvest]], after which they are dried in the shade, then layered in dry sand.<ref name="valnet" /> <br> Chestnuts behave similarly to seeds in that they produce very little [[Ethylene as a plant hormone|ethylene]], and their [[Plant respiration|respiration]] rate is low, varying between 5 and 20&nbsp;mg/(kg·h) depending on the temperature.<ref name="fao" />