1 ripe peach, peeled and sliced or 6 frozen peach slices, thawed

1 small handful fresh mint leaves

2 tbsp freshly squeezed lime juice

3/4 tsp agave syrup

1 1/2 oz white rum

Lemon-lime soda

Fresh raspberries, for garnish

Place the peach slices, mint leaves, lime juice and agave syrup in the bottom of a cocktail shaker. Muddle with the end of a wooden spoon. 
Add the rum to the cocktail shaker, and fill with ice. Shake for 30 seconds. 
Add fresh ice to a cocktail glass, if desired. Pour the contents of the cocktail shaker into the glass. Top off the glass with lemon-lime soda. Garnish with fresh raspberries and serve.