In a small saucepan, combine the sliced strawberries, water, and sugar.

Bring the mixture to a boil over medium heat, then reduce to a simmer.

Let the mixture simmer for about 10 minutes, or until the strawberries are soft and the syrup has taken on a bright red color.

Strain the syrup through a fine mesh sieve into a bowl, pressing on the strawberries to extract as much liquid as possible. Discard the solids.

Allow the syrup to cool to room temperature.

In a large pitcher, combine the cooled Strawberry Simple Syrup with a bottle of white wine.

Add the sliced strawberries and orange slices to the pitcher.

Refrigerate the sangria for at least 4 hours, or overnight, to let the flavors meld together.

Just before serving, stir in the club soda for a refreshing fizz.

Serve the sangria over ice and garnish with fresh mint leaves.