Brew your coffee and allow it to cool to room temperature. For a quicker option, you can brew it and then refrigerate it for about 30 minutes.
In a large glass or pitcher, combine the cooled coffee, milk, chocolate syrup, sugar, and vanilla extract. Stir well until the sugar is dissolved and all ingredients are fully mixed.
Fill a glass with ice cubes, then pour the mocha coffee mixture over the ice.
If desired, top with whipped cream and sprinkle chocolate shavings or cocoa powder for an extra touch.
Serve immediately and enjoy your refreshing mocha iced coffee!