Step 1: Wash and slice two of the peaches into wedges or cubes. Thinly slice the third peach for garnish and set aside. Thinly slice the orange and lemon. Halve large strawberries.
Step 2: In a large pitcher or punch bowl (at least 2-quart capacity), combine the sliced peaches (from Step 1, excluding garnish), sugar, and brandy (if using). Gently stir or muddle to combine. Allow to sit at room temperature for 30-60 minutes to macerate.
Step 3: Add the sliced oranges, lemons, and strawberries to the pitcher with the macerated peaches. Pour in the chilled white wine. Stir gently to combine all ingredients.
Step 4: Cover the pitcher and refrigerate for at least 4 hours, or ideally overnight, allowing the flavors to meld and deepen. This chilling period is key for a fantastic peach sangria recipe.
Step 5: Just before serving, remove the pitcher from the refrigerator and add the chilled sparkling water or club soda. Stir gently.
Step 6: Fill individual glasses with ice. Ladle the peach sangria into each glass, ensuring a good mix of fruit. Garnish with the reserved thin peach slices and a sprig of fresh mint, if desired. Serve immediately.