Why This Works
The whiskey ginger works because ginger ale and whiskey share vocabulary — vanilla, warmth, a little spice — so they blend rather than compete. Ginger ale is gentler than ginger beer, which is the point here: this is the smoother, easier-drinking cousin of the mule.
Restraint in the stir is what preserves the drink. Every rotation of the spoon knocks carbonation out of solution, and the bubbles carry both the texture and the ginger aroma. Combine gently, and let the lime's fresh bite do the finishing work.
The Alcohol-Free Swap
Alcohol-free whiskey's vanilla-and-oak profile locks into ginger ale's spice naturally — this is one of the most forgiving pairings in the AF repertoire.