Gather all your ingredients, making sure the wine is ready, and fruits are washed and sliced.
Slice the oranges and apples into thin, even slices, exposing the juicy interior and bright color.
Place the fruit slices and cinnamon sticks into a large pitcher or bowl, and sprinkle the sugar over the top.
Gently muddle the fruit and cinnamon with a muddler or wooden spoon; press lightly to release juices and warm the spices aroma.
Pour the entire bottle of red wine and the brandy or orange liqueur into the mixture, stirring gently to combine.
Cover the pitcher and let the sangria sit in the fridge for at least 4 hours or preferably overnight to allow flavors to meld and deepen.
Before serving, taste the sangria and adjust the sweetness with additional sugar if needed. For a bubbly touch, stir in sparkling water or soda just before serving.
Serve the warm, fragrant sangria in glasses garnished with extra fruit slices and a cinnamon stick for a festive presentation.