1 pinch Mexican chili-lime seasoning (such as Tajin®)
2 ounces habanero-infused tequila
1 lime wedge
5 ounces grapefruit-flavored soda (such as Fresca®)
Rim a highball glass with chili-lime seasoning and fill halfway with ice.
Combine tequila, lime juice, and 1 cup ice in a cocktail shaker. Shake for 1 minute. Strain into the glass. Top with grapefruit soda.