El Diablo

Shake in iced cocktail shaker strain
1 1/2 oz Tequila (4.5 cl)
1/2 oz creme de cassis (1.5 cl)
1/2 oz fresh lime juice (1.5 cl)
Fill with ice, ginger ale
Add 1/2 lime shell (1 1/2 oz, 4.5 cl)
Serve in a highball glass (9.0 oz)

Some similar cocktail recipes:

Mexican El Diablo