Peace, mercy, and blessings of God be upon you. Good evening to our valued customers. For orders and inquiries, call 059351106, Abu Awad. The Al-Rass water jar with jute (or the jute-covered jar) is one of the oldest and smartest traditional natural cooling innovations that our ancestors used in the past, and many still prefer it today for producing healthy, cold, and pure water with a distinctive heritage flavor. Here is a detailed explanation of its mechanism, benefits, and preparation: Concept and Mechanism of Action (Evaporative Cooling) The jar, made of pottery (fired clay), relies on its very fine pores. These pores allow water molecules to slowly filter and permeate to the outer surface of the jar (popularly known as the 'sweat of the jar'). When the jute (made of natural jute fibers) is wrapped around the jar and moistened with water, the following happens: The jute absorbs the filtered water from the jar and retains moisture for a long time. When a stream of air (wind or dry air) passes over the wet jute, the water begins to evaporate. This evaporation process draws heat from the pottery jar and the water inside it, causing the water temperature to drop significantly, making it naturally cold and refreshing without the need for electricity. Benefits of Using the Jute-Covered Jar Natural and Healthy Cooling: It cools water to an ideal body temperature (not extremely cold like refrigerators), making it light on the stomach and not causing throat pain. Water Alkalinity and Filtration: Pottery is a natural material that restores 'vitality' to water and makes it alkaline, which helps expel toxins from the body. The pottery pores also act as a natural filter that traps impurities. Extended Water Cooling: The jute protects the jar's body from direct sunlight and hot air, ensuring the evaporative cooling process continues for a longer period, even on hot summer days.