Pour the wine, brandy, and triple sec over the fruit.
Stir in the simple syrup until well combined.
Let the mixture chill in the refrigerator for 4-6 hours.
Add the club soda just before serving.
Fill wine glasses with ice and pour the sangria mixture.
Make sure to include some fruit in each glass when serving.
Notes
Choose a medium-bodied Spanish red wine like Rioja or Tempranillo.The sangria can be made up to 24 hours in advance without the club soda.Store leftovers in the refrigerator for up to 2 days.Adjust the simple syrup amount based on the sweetness of the fruits used.Replace club soda with lemon-lime soda for a sweeter drink.For a non-alcoholic version, use grape juice instead of wine and skip the brandy.