Step 1.
- Chill the martini glass by filling it with ice water and setting it aside.
Step 2.
- In a cocktail shaker, combine the vodka, chocolate liqueur, and peanut butter.
Step 3.
- Add ice to the shaker and shake vigorously for about 15 seconds to thoroughly chill and mix the ingredients.
Step 4.
- Empty the ice water from the martini glass and strain the mixture into the glass.
Step 5.
- Garnish with chocolate shavings on top to enhance the presentation.