In a mixing bowl, combine the whole milk and rich chocolate syrup. Stir thoroughly until the ingredients are fully blended, creating a smooth chocolate-mint base.
Introduce the heavy whipping cream and the pure mint extract to the bowl, then whisk the mixture vigorously until it becomes frothy and slightly thickened.
Prepare a cocktail shaker by filling it halfway with crushed ice. Carefully pour the chocolate-mint mixture over the ice in the shaker.
Secure the lid on the shaker and shake vigorously for about 20 seconds, ensuring that the drink is well chilled and the flavors are nicely incorporated.
Using a strainer, pour the chilled mixture into elegant martini glasses, allowing the velvety beverage to flow smoothly.
Complete the presentation by garnishing each martini with a few fresh mint leaves. For an extra touch, sprinkle a generous amount of chocolate shavings on top, enhancing both flavor and visual appeal.
Notes
Serve the martinis on a dark, elegant tray to enhance the contrast of colors. Optionally, rim the glasses with chocolate syrup before pouring in the drink for an extra indulgent experience.