Ice tea is a form of cold tea, often served in a glass over 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, and cherry. Two versions of ice tea exist; notably herbal ice tea and regular ice tea (the latter being made from tea leaves). Unsweetened ice tea is made by a particularly long steeping of tea leaves at lower temperature (one hour in the sun versus 5 minutes at 80-100°C). In addition, sometimes it is also left to stand overnight at the refrigerator.