I left out the syrup by mistake, but it was excellent without it.
Adam Rothstein
No need for the syrup, imo. Plenty sweet with just the juice.
Made this with a Buddha's Hand rather than a lemon (about a quarter, cut into pieces). Very zesty, looked cool.
Used an extra 30 ml grapefruit and 30 ml soda water instead of the grapefruit soda, it was good.