In a saucepan, combine the granulated sugar and water. Heat over medium heat, stirring until the sugar has completely dissolved. Remove from heat and allow to cool.
While the sugar syrup cools, place the chopped peaches and raspberries in a blender or food processor. Add the lemon juice and a pinch of salt to enhance the flavors.
Pour the cooled sugar syrup into the blender with the fruit. Blend until smooth and well combined.
Taste the mixture and adjust sweetness if necessary by adding more sugar, if desired.
Transfer the fruit mixture to a shallow dish and place it in the freezer. After 30 minutes, use a fork to scrape and stir the mixture to break up any ice that forms.
Continue to freeze, scraping with a fork every 30 minutes for about 2-3 hours until it reaches a fluffy sorbet consistency.
Once ready, let the sorbet sit at room temperature for about 5 minutes before serving to soften slightly.
Notes
Serve scoops of the sorbet in chilled bowls, garnished with a few fresh raspberries and a mint leaf for a refreshing touch.