Choose 2-3 drinks with different sugar contents for the layers (I listed the drinks I used above)
First, fill your cup with ice all the way to the top.
Pour the drink with the highest sugar content into the cup, filling it approximately one third full.
For the second layer, pour the second drink with the lower sugar content slowly through the ice to fill approximately the second third of the glass full.
Finally, pour the sugar-free or lowest sugar drink slowly through the ice until you’ve reached the top of the glass.