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A pot-in-pot refrigerator, clay pot cooler [1] or zeer (Arabic: زير) is an evaporative cooling refrigeration device which does not use electricity. It uses a porous outer clay pot (lined with wet sand) containing an inner pot (which can be glazed to prevent penetration by the liquid) within which the food is placed. The evaporation of the ...
Grog, temper for clay. Grog, also known as firesand and chamotte, is a raw material usually made from crushed and ground potsherds, reintroduced into crude clay to temper it before making ceramic ware. It has a high percentage of silica and alumina. It is normally available as a powder or chippings, and is an important ingredient in Coade stone.
There are also several traditional techniques of handbuilding, such as pinching, soft slab, hard slab, and coil construction. Other techniques involve threading animal or artificial wool fiber through paperclay slip, to build up layers of material. The result can be wrapped over forms or cut, dried and later joined with liquid and soft paperclay.
The method, a form of passive controlled-atmosphere storage, works by sealing fruit in the clay-rich mud, restricting flow of air, moisture and microbes, much as a plastic bag would. Discs are formed from two bowl-shaped pieces, which are sculpted from mud and straw, and baked in the sun before being filled with up to 1–2 kilograms (2.2–4.4 ...
They are commonly durable buildings built from timber, stone or clay used to safely store valuable commodities. Kura in rural communities are normally of simpler construction and used for storing grain or rice. Those in towns are more elaborate, with a structural timber frame covered in a fireproof, clay outer coating.
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Benefits of using the hermetic storage method include (i) enhances grain life in a much safer and it is rodent-free, weevils-free, pesticides-free and prevents infestation of insects, (ii) the storage process is defiant and resistant to harsh conditions (with the exception of extremely harsh conditions i.e. temperature 0 to -20 degrees Celsius ...
Ong (옹; 甕, 瓮) refers to a clay jar. [citation needed] Pottery has been used on the Korean peninsula since prehistoric times for food storage. In the Three Kingdoms period, images of large and small pottery appear on the murals of Anak Tomb No. 3 in Goguryeo, and in Baekje and Silla. Records indicate that they were used to store rice ...