A Paloma is a tequila highball built with grapefruit soda and lime. It is popular because it is fast, refreshing, and forgiving, but small choices make a big difference: the type of tequila, the sweetness of the soda, the amount of lime, and how gently it is mixed. This guide explains a reliable classic build, how to choose grapefruit soda, how to adjust balance without guessing, and how to troubleshoot the most common issues.