Retro Raspberry Lime Rickeys

Directions

1. 1
   Combine raspberries, sugar and zest in a saucepan and place over medium heat. Bring the mixture to a boil, stirring constantly until the berries dissolve and the sugar melts. Only let it boil for 2-3 minutes as you don't want jam. After that time, take the syrup off the heat and let cool slightly. Strain the syrup.
2. 2
   Fill a tall glass by half with ice. Pour 3 to 4 tablespoons of the syrup over the ice. Squeeze the juice of half a lime into the glass. Fill the glass to the top with sparkling water and garnish with a lime slice or two.
3. 3
   Serve with a straw so that the drinker has the choice of either stirring or getting lots of syrup in the first sip (that latter is still my preference!).