In a large pitcher or bowl, thoroughly mix together the eggnog, non-alcoholic amaretto syrup, ground nutmeg, ground cinnamon, and pure vanilla extract. Stir gently but well until all ingredients are combined.
Take your favorite glasses and fill each with ice cubes, making sure to fill them about three-quarters full to keep the drinks cool.
Carefully pour the prepared eggnog mixture into each glass over the ice, filling them until they are about half full.
Top each glass with sparkling water or club soda to add a refreshing fizz. Pour gently to avoid overflow and maintain the bubbles.
Using a spoon, gently stir the mixture in each glass to combine the eggnog and sparkling water, avoiding any loss of carbonation.
Add a generous dollop of whipped cream on top of each drink, creating a beautiful contrast against the eggnog.
For an extra festive flair, sprinkle a pinch of nutmeg or cinnamon over the whipped cream. You may also add a cinnamon stick for stirring and a sprinkle of crushed almonds on top for added texture and crunch.
Notes
Serve on a holiday-themed tray with additional garnishes.