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NASA coffee cup
(lemmy.world)
The Capillary Cup is a zero-gravity cup designed by NASA astronaut Donald Pettit on the International Space Station. The product is an open drinking cup designed to be used in a microgravity environment, developed from Pettit’s desire to drink water without a bag and straw in outer space.
Release the liquid without gravity? I'm pretty sure any bottle design would need to be collapsible - basically becoming a bag at that point - to work in zero g, but maybe I misunderstand how these cups are supposed to work.
Just remember, when you’re using a straw, it’s not your suction that pulls liquid into your mouth, it’s the difference in the air pressure between the two that pushes it into your mouth.