In Afghanistan the grapes are stored for up to six months, kept fresh in airtight mud-straw containers. Afghans developed this method of food preservation, which uses mud-straw containers and is known as kangina, centuries ago in Afghanistan's rural north. Mechanism According to Associate Prof Jean Hunter of Cornell University, “From a food science perspective this would be considered passive controlled-atmosphere storage. Grapes and other fruits are composed of living cells which use oxygen and

Here's how to wash the natural wax and any chemicals(yes, even organic) of your grapes. -Rinse with water - add grapes to a bowl with 2 teaspoons of baking soda, 2 teaspoons of salt, shake and mix them for 30 seconds. - rinse with water and allow to dry. Clean as a whistle! | BobbyParrish