Starbucks Frappuccino Base Syrup

4.75 from 85 votes

The secret ingredient to making perfectly smooth Frappuccinos at home.

Prep Time7

Total Time7

Course: Drinks

Cuisine: American

Servings: servings

Author: Jee Choe

Put sugar and water in a saucepan and simmer.
Simmer on low heat and stir until sugar completely dissolves. Turn off heat and let it cool down to room temperature.
Combine cooled down simple syrup, xanthan gum powder, and vanilla extract in a blender.
Blend until smooth. Start on low speed then increase to high.
Pour Frappuccino base syrup into an airtight container.
Stir well before using.
Frappuccino base syrup can be stored in the refrigerator in an airtight container for a month.

The Frappuccino base syrup is thick, so it's best to put it in a jar instead of a bottle so you can scoop it out.
Don't add xanthan gum powder to the saucepan with the sugar and water since it just won't mix well and will clump. Mix it in a blender.
Use regular white, granulated sugar or cane sugar. You can also use brown sugar if you want a richer, caramel-like syrup.
Vanilla extract is what I consider a flavor enhancer. It's not absolutely necessary but it adds a little something that makes it taste better.
Turn any frozen drink with ice into a Frappuccino! Instead of adding simple syrup or sugar in blended frozen drinks, use the Frappuccino base to make it smooth and creamy.