Pastila is a traditional Russian confectionery made primarily from fruit puree, sugar, and egg whites. It has a soft, chewy texture and is often flavored with natural ingredients like berries or apples. The process of making pastila involves cooking the fruit puree until it thickens, then mixing it with sugar and egg whites before drying it into a firm, yet tender, treat. Originating in the 19th century, pastila was popularized in the city of Kolomna, where it was made from local fruits. Today, it is enjoyed as a sweet snack and is often packaged attractively for gifts or special occasions.