Fill a cocktail shaker with ice.
Add vodka, peach schnapps, orange juice, and cranberry juice.
Shake vigorously for 10–12 seconds until well chilled.
Fill a collins glass with fresh ice.
Strain the cocktail into the glass.
Garnish with an orange slice or maraschino cherry and serve immediately.
Keep the vodka-to-schnapps ratio equal at 30ml each - bumping the peach schnapps too high tips the drink into cloying territory; the balance is what makes this so sessionable.
My Bar Shelf reads your shelf and shows you every cocktail you can make from what you already own, including A Gilligan's Island.