Whisk heavy cream and vanilla syrup to make whipped cream. Set aside.A handheld milk frother whisks up whipped cream in seconds.
Blend chocolate sauce, instant coffee, milk, ice, and homemade Frappuccino base syrup until smooth.Start the blender on low, then turn it up to high. Use a tamper tool to make sure the ice gets blended evenly. It should take about 15 - 30 seconds depending on the blender.
Pour Frappuccino into a cup.The drink makes 16 ounces (grande size) of Frappuccino.