Step 1: Brew your coffee and allow it to cool slightly.
Step 2: Rim your glass using a little chocolate syrup and then coating with chocolate shavings (optional).
Step 3: Add the ice and chocolate syrup to the cocktail shaker, and stir gently.
Step 4: Pour coffee on top, seal the shaker, and shake vigorously until thoroughly chilled, about 20-30 seconds.
Step 5: Strain the liquid into a glass and serve immediately.