Iced tea
Iced tea is traditionally served with lemon slice used as a garnish, which is often placed on the rim of the glass. In the Southwest United States (or at least in restaurants with a Southwest theme), lime is also very popular (especially in Mexican restaurants). It is not entirely uncommon for establishments to put out slices of lemon and lime for the customer to take for themselves. Many people in the Southeastern USA will also drink sweet (iced) tea with milk.