Hacker News Reader

Full thread

PhantomGremlin

Is it really faster when you account for the time needed to first create the whirlpool?

Conveniently, the emptying "race" in the video only starts after the whirlpool has been created!

View on HN

It is, we use it often (chefs), example needing to empty 12 bottles of red wine into a pot :-)

Edit: fat thumbs

Time it yourself by spinning the bottle right after you begin pouring, and you will notice that it is still faster. ;)

So is there a way to do this trick without your hand touching the liquid?

Yes

https://www.youtube.com/watch?v=MLeYYMT-3BM

Yes, I do this all the time. Hold the bottle vertically with the mouth facing downwards. As the water is pouring out, flick your wrist in an upwards elliptical arc, keeping the mouth facing downwards. It only takes me one or two flicks to create the vortex, and no liquid sprays around or touches me.

It's kind of a swirling motion.

Reply on news.ycombinator.com