Preheat the oven according to package directions.
Pour the cake mix into a glass or metal bowl. (See Gr8 Tip) Whisk the nutmeg into the dry cake mix.
In a liquid measuring cup mix the coffee and maple syrup together.
Use the coffee and syrup mixture as part of the liquid when preparing the cake according to package directions. The Betty Crocker Cake Mix called for 1 1/4 cups water. So I put the coffee/syrup mixture in a 2 cup measure and added water until the liquid totaled 1 1/4 cups.
When the mixing is complete, pour into a 10" ungreased tube pan. Run a long knife through the batter a couple times, this will minimize air bubbles.
Bake according to package directions.
Cool the tube pan upside down on a bottle.
When completely cool, run a knife around the edge of the cake pan and remove the cake from the pan.