Muddle mint and sugar together in a tall glass. Add bourbon and peach schnapps. Squeeze juice out of lime slices and toss the lime slices in the glass. Add crushed ice and top with sparkling water. Garnish with peach slices.
Recipe can be easily scaled up to make a pitcher if you're feeling really thirsty ;)
Recipe by Port and Fin at https://portandfin.com/peach-julep/