A fact from Kangina appeared on Wikipedia's Main Page in the Did you know column on 17 December 2023 ( check views). The text of the entry was as follows: Did you know... that rural Afghans keep fresh grapes in mud? A record of the entry may be seen at Wikipedia:Recent additions/2023/December. The nomination discussion and review may be seen at Template:Did you know nominations/Kangina.

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According to a twelfth-century text by the Sevillan agronomist Ibn al-ʿAwwām, a similar method was in practice in Andalusia at that time:

Ibn al-ʿAwwām writes the largest number of pages about grapes preservation. He writes that the grape clusters can be preserved if covered with fig tree bark, dampened by purslane juice or water, and hung. Additionally, the grape cluster can be covered in water, in which mice excrement and fig tree bark have been boiled. Once dried, the grapes should be wrapped in barley straw. Soaking grapes in water in which banana, pine, or vine bark has been milled, and hanging the grapes dry is another method of preservation. The grapes can be kept in cowpat bowls, with a mud-sealed lid, and then stored in a cool place. Layering grapes and straw in a glass container sealed with mud to prevent air reaching the grapes is a third preservation method according to Ibn al-ʿAwwām. A fourth method would be to soak the grape cluster in brine and leave them to dry over beans, barely, or straw in a cool, shady place. Soaking the grape clusters in water or cutting the cluster with its stem and leaves, coating it with pitch and hanging it, are two other methods that Ibn al-ʿAwwām mentions. Putting the clusters, cleaned from rotten grains, into glasses or glazed pots filled with decontaminated rainwater is another often used method. Burying the grape cluster in barley or soaking it in bleach from a fig tree bark and strained and wrapped in straw in another alternative.

Cabo-González, Ana M. (2014). "The Study of the Evolution of Fruit Preservation Techniques in the Iberian Peninsula through the Agronomic Andalusian Works, their Roman Antecedents and Posterior Footprint in the Renaissance". Arabic Sciences and Philosophy. 24 (1): 139–168. doi: 10.1017/S095742391300012X. ISSN  0957-4239.

No indication of whether this practice was independently developed, or linked in any way to the Afghan tradition. But if this article is to cover the practice in itself as a food preservation technique, not only an anthropological topic, I don't think it would be OR to add somewhere: The Book on Agriculture written by twelfth-century Sevillan agronomist Ibn al-'Awwam states that grapes can be preserved by placing them in straw a glass container sealed with mud. FourViolas ( talk) 14:07, 6 December 2023 (UTC) reply

This is unbelievable, how on earth did you find this? Thank you so much! I’ll add to the article. Zanahary ( talk) 16:42, 6 December 2023 (UTC) reply

Or you should feel free to do so yourself.

seriously, HOW did you find this? Zanahary ( talk) 16:44, 6 December 2023 (UTC) reply

Just Google Scholar searching for papers with terms like "grape preservation mud straw"! There was very little to find that you hadn't already covered—great work. I can add this in. FourViolas ( talk) 18:58, 6 December 2023 (UTC) reply