4 parts salt to 1 part cayenne pepper (to rim the glasses)
1 lime wedge, plus ¾ cup fresh lime juice
1 cup mint leaves, plus more for garnish
3½ cups seedless watermelon, cubed
2½ ounces agave
2 cups vodka
2 ounces dry vermouth
Ice cubes, both regular and large
2 cups sparkling rosé, chilled
Directions
Pour the cayenne and salt mixture onto a plate. Rub half of each rim of several rocks glasses with the lime wedge. Dip each rim into the cayenne salt.
In a blender, squeeze the lime wedge, then add the mint, watermelon and agave. Blend until smooth. Add the vodka, vermouth, the additional lime juice and 3 to 4 ice cubes. Blend until slightly frothy.
Pour the cocktail into a large punch bowl. Add the sparkling rosé and several large ice cubes.
Serve over ice in the prepared glasses and garnish with a sprig of mint.