Lavashak is a type of Persian fruit leather, traditionally made by boiling fruits until they turn into a thick puree, which is then spread out and dried. It's a popular snack in Iran and other Middle Eastern countries, known for its tangy and sweet flavor. Common fruits used to make lavashak include plums, sour cherries, pomegranates, and apricots. It's enjoyed as a healthy, natural treat and can be found in various forms, from thin sheets to thicker, chewier pieces.