In a small pot, combine sugar and 3/4 cup water over medium heat. Bring the mixture to a boil, stirring occasionally until the sugar completely dissolves, about 3-4 minutes. Remove from heat and allow it to cool slightly.

Once the simple syrup has cooled for about 5 minutes, carefully add a small amount of black gel food color to the pot. Stir well until the syrup transforms into a rich, dark hue.

In a large pitcher, mix the cooled black syrup with 1 1/2 cups of freshly squeezed lemon juice. Slowly add 4 cups of cold water, stirring gently to combine.

Fill tall glasses with ice cubes. Pour the prepared bewitching black lemonade over the ice, noticing the striking contrast of the dark liquid against the bright ice.

For a festive touch, garnish each glass with a slice of lemon or any fun Halloween decorations you desire.