This one probably classifies more as an in-the-know drink than a "secret" one. Order any Frappuccino "affogato-style" and you'll get a shot of hot espresso added on top of your drink as opposed to having it blended in.
Super Cream Frappuccino
Like to go heavy on the whipped cream? Ask for a "Super Cream" version of your Frappuccino and you'll get half a cup of whipped cream blended in.
The Tall drink's smaller, less expensive younger brother.
Cake Batter Frappuccino
Perhaps a little deceptively named, as there are no actual pieces of cake or cake batter in it, this beverage originally consisted of vanilla and almond syrup added to a Vanilla Bean Crème Frappuccino. However, since the almond syrup is largely no longer available, some recommend that you try subbing in hazelnut syrup and white mocha for a similar flavor.
White Chocolate Mocha with java chips and chocolate chips sprinkled in.
Sometimes also called a "Penguin Mocha," a "Marble Mocha," or simply a "Black and White Mocha," this drink combines the white chocolate mocha with the regular mocha for those who can't pick a favorite. Or, if you really want to take it to the next level, ask to have raspberry flavoring added for something called the "Red Tux" Mocha.
A Chai latte (hot or iced) with a shot of espresso added in. And if you want two shots? That's called a "Double Dirty" or "Extra Dirty" Chai.
A Red Eye or Black Eye, sure — that's one and two extra shots of espresso in a regular drip, respectively. But those that go for green get a sure-to-jack-you-up three shots of espresso boost to their cup of coffee. (Note: apparently at some places it's called a Blue Eye.)
And the award for best alliteration in a Starbucks drink name goes to the Three C's: Cinnamon Dolce Latte with caramel syrup and chocolate mocha syrup.
This off-the-menu item sounds a little like a Starbucks version of a DQ Blizzard or a McFlurry, except you have to have to buy a package of biscotti cookies separately and ask your barista to blend them into your Frappe. Note: There seems to be some contention online as to whether or not baristas are actually allowed to put biscotti in the blender, so maybe only ask someone you know who is willing to do you a favor.
Read more at:http://www.thedailymeal.com/ultimate-guide-starbucks-secret-menu//