Iced tea (sometimes known as ice tea) is a form of cold tea, often served in a glass with ice. It may or may not be sweetened. Iced tea is also a popular packaged drink. It can be mixed with flavored syrup, with common flavors including lemon, peach, raspberry, lime, passion fruit, and cherry. While most iced teas get their flavor from tea leaves (Camellia sinensis), other herb-infused beverages are also sometimes served cold and referred to as iced tea. Unsweetened iced tea is sometimes made by a particularly long steeping of tea leaves at lower temperature (one hour in the sun versus 5 minutes at 80-100 °C). Some people call this "sun tea". In addition, sometimes it is also left to stand overnight in the refrigerator.