There is no official Starbucks secret menu.
Since Starbucks baristas aren’t trained in making secret menu items, you MUST give them the recipe instead of the name of the drink.
How to order it:
“Can I get a grande Matcha Frappuccino with no classic syrup, 1 pump of mocha, 1 pump peppermint, java chips blended in, and mocha drizzle on top?”