For the full details on making the lemon syrup and soda please refer to the original Italian lemon soda recipe. Technically you make a large pitcher full but my suggestion is to make this in ...

Add in the tangerine juice, lemon juice, rosemary simple syrup, and lemon-lime soda. If you prefer your drink to be a little less sweet, you can leave out the lemon-lime soda. Top off with club soda.