Black lemonade

Grind activated charcoal into powder in a coffee grinder.

Pour hot water to dissolve the coal completely, let it cool, and put it in the refrigerator.

Put ice in the pitcher and pour in the coal solution.

Slice one lemon into thin rounds for decoration, squeeze juice from another and add it to the pitcher.

Pour lemon juice into a pitcher, add lemon slices, and stir with a long spoon. Top up with soda.