Logan Warren has ordered what he claims is the most expensive Starbucks drink ever. The cost? $23.60.

"It's not every day that you receive a coupon for one of the priciest beverage chains in the world!" writes Warren in a Coffee and Computers blog. "Armed with my Starbucks Rewards card, I decided to take the opportunity to find out just how much money I could pour into a Trenta."

Trenta is Starbucks' 31-ounce cup, which is about 920 ml or just a shade smaller than the 7-Eleven Big Gulp.

He spent about half an hour with a laughing barista working on the creation to jack the price as much as possible.

Here's what to order if you are looking to do the same. It's one Java Chip Frappuccino in a Trenta cup, 16 shots of espresso, a shot of soy milk, caramel flavouring, banana puree, strawberry puree, vanilla beans, Matcha powder, protein powder, and a drizzle of caramel and mocha.

The drink contains 1400mg of caffeine. That's almost three times the amount listed as a heavy dose by Erowid, a well respected drug catalog.