Paloma
The paloma is a tequila-based cocktail. This drink is most commonly prepared by mixing tequila, lime juice, and a grapefruit-flavored soda such as Fresca, Squirt, or Jarritos and served on the rocks with a lime wedge. Adding salt to the rim of the glass is also an option. Alternatively, the grapefruit soda can be replaced with fresh white or red grapefruit juice (jugo de toronja) and club soda (sugar optional). A simple paloma is a two-ingredient cocktail consisting only of tequila and grapefruit-flavored soda. A more complex variant of the Paloma is the cantarito, which in addition to lime juice, also has lemon juice and orange juice.
Source: Wikipedia
Recipes

Paloma - Traditional Mexican Cocktail Recipe | 196 flavors
What is paloma? Paloma is a very popular Mexican tequila-based cocktail. Contrary to popular belief, paloma, and not margarita, is Mexico's favorite cocktail. How to make a paloma A traditional paloma cocktail is served on the rocks and often in a highball...