Step 1

Combine the preserved lemons, sugar, and water in a small saucepan. Bring to a simmer over medium heat and cook until the sugar dissolves, about 1 minute. Cool the lemon syrup off the heat for 1 hour. Add the lemon juice and stir to combine.

Step 2

To serve, pour 2 fluid ounces of the lemon syrup over ice and top with 4 fluid ounces soda water.