This champagne cocktail will be sure to impress your guests. If watermelons aren't in season, substitute with another juicy fruit.
- Mix the sugar and salt together on a saucer. Dip your finger into water then run it around the rim of the glass.
- Dip into the saucer so the entire rim is coated. Put aside and repeat with the second glass.
- Puree the watermelon with the tequila and lime, then add the bubbly.
- Pour into glasses and float a couple of rose petals on top. Cut thin slices of lime to decorate the glasses.