Prep the fruit: Wash everything well. Slice the peaches into thin wedges. Cut the orange and lemon into thin rounds.
Mix it up: In your pitcher, add the peaches, orange, and lemon. Pour in the wine, peach schnapps, simple syrup, and peach nectar.
Let it chill: Give it a gentle stir with your wooden spoon. Cover with plastic wrap and refrigerate for at least 4 hours, or overnight if you’ve got the patience. The longer it sits, the better it gets.
Finish and serve: Right before serving, add the sparkling water and stir gently. Fill wine glasses with ice and pour the sangria over.
Garnish: Drop a few pieces of the soaked fruit into each glass. Top with mint leaves if you want to get a little Instagrammy.
Honestly, don't skip the chilling. The fruit needs time to work its magic with the wine.