We tried Juicero, the $700 mess-free juicer that Silicon Valley investors and celebrities are crazy about - here's what it's like

The bright green glass of "Sweet Greens" had just been pressed for me by Doug Evans in the San Francisco office of his new startup, Juicero.

And it should taste darn good. The juice came from a WiFi-connected kitchen appliance Evans' team wants to start selling this summer for about $700 - about at cost. That makes it one of the most expensive juicers in the world, although there are some that retail for more than $1,000. That doesn't include the necessary juice packets themselves, which sell for between $5 and $7.

Evans, who formerly ran the healthy food chain Organic Avenue, spent 39 months working on a dozen prototypes to build the perfect juicer. His goal was to find a way to make the freshest juice anyone has ever tasted, and rumor has it that celebs like Justin Timberlake to Gwyneth Paltrow tried and enjoyed the results. His startup has raised about $100 million from investors to date.

So, is Juicero juice really all it's cracked up to be? Here's what it was like.