Make the cocktails: In a glass pitcher, muddle the raspberries and jalapeno, then fill halfway with ice. Add the tequila, grapefruit juice, lime juice and agave. Take a second pitcher (the same size) and pour one into the other repeatedly to mix the drink together. Top it off with club soda or lemon-lime soda.
Make the grapefruit salt: Crush the salt and grapefruit zest together with a mortar and pestle, then spread on a plate. Run a lime wedge around the rim of each glass, then dip the glasses in the grapefruit salt. Fill with the cocktails.
Photograph by Kat Teutsch
Recipe courtesy Guy Fieri for Food Network Magazine