01 - Combine sugar and 1/2 cup water in a small saucepan. Heat over medium heat, stirring continuously until sugar completely dissolves. Remove from heat and allow to cool to room temperature.
02 - In a large pitcher, pour the freshly squeezed blood orange juice and lemon juice. Stir gently to blend the citrus flavors.
03 - Add the cooled sugar syrup to the citrus juice mixture. Stir thoroughly to ensure the sweetener is evenly distributed throughout the base.
04 - Pour in 3 cups of cold water or sparkling water. Stir well to combine all ingredients. Taste the mixture and adjust sweetness or acidity by adding more sugar syrup or citrus juice as desired.
05 - Fill serving glasses with ice cubes. Pour the prepared lemonade over the ice. Garnish with fresh blood orange slices, lemon wheels, and mint sprigs if using. Serve immediately while chilled.