Directions

1. Add milk and crushed coffee beans to a saucepan. Heat mixture over medium-high heat for 7 minutes, then remove from heat and steep in the milk for 15 minutes.
   

2. Strain the coffee mixture and transfer it to the jar of a blender. Discard the crushed coffee beans. Add the cinnamon sticks, cardamom, and honey to the steeped milk and blend on high speed until the spices are coarsely ground about 30 seconds.
   

3. Strain the liquid back into the saucepan and discard the ground spices. Rewarm the spiced coffee over medium-high heat until the liquid is hot and steaming. Add rum, if desired. Pour into warmed coffee mugs, and serve hot.