Before I even think about mixing, I make sure the apple cider and ginger beer are already cold from the fridge. This matters because warm ingredients melt your ice faster and dilute the punch before anyone gets to taste it properly. I usually chill everything overnight so it's ready to pour the moment guests arrive.
In my pitcher, I pour in the apple cider first, followed by the bourbon or whiskey. I give it a light stir at this stage, just enough to combine without creating too much motion. This base can actually be made a few hours ahead if I'm short on time before a party.
Next, I grate in a pinch of cinnamon and nutmeg directly over the pitcher. I always use freshly grated spices here because the aroma is noticeably stronger than anything pre-ground from a jar. A light stir afterward helps the spices distribute evenly through the liquid.
I squeeze in the fresh lemon juice right before serving, not earlier, since citrus flavor fades the longer it sits. This little splash cuts through the sweetness of the cider and keeps the punch from tasting flat or one-note.
Just before serving, I pour in the ginger beer last. Adding it at the very end preserves all that lovely carbonation, so every glass gets that satisfying fizz instead of a flat pour.
I fill glasses with ice first, then ladle the punch over top so it stays cold without getting watered down too fast. A couple of thin apple slices on the rim or floating on top finishes the look beautifully.