Wash and pit the peaches, then chop them into small pieces. Optionally, puree half for a smoother texture.
In a large bowl, whip the heavy cream using an electric mixer until soft peaks form (about 3 minutes).
In another bowl, combine sweetened condensed milk, pureed peaches (if using), vanilla extract, and salt; mix well.
Gently fold the whipped cream into the peach mixture until fully incorporated.
Pour the mixture into an airtight container and freeze for at least 4 hours or overnight.
Serve in bowls or cones with extra peach slices if desired.