I use hot water to mix up my protein shakes (for reasons). I’ve gotten good at putting the powder in, and the lid on, and then shaking lightly before releasing the built up pressure. After this, I screw the lid back down and can shake the shit out of the beverage with no worries of pressure buildup.
I find this confusing because the beverage is maybe a couple degrees cooler than when I first put the powder in so shouldn’t it build up pressure just as quickly as it did at first?
Thank you for listening to my crazy ramblings 😅
In: Chemistry
It’s not steam being generated by the drink, it’s the air in the headspace expanding as it warms up.
During the initial shaking, the air above the drink goes from room temp to being as hot as the drink. That makes it expand, so there’s some pressure. Then you release that pressure, then re-seal the lid.
At that point, the air inside is already as warm as the drink. So further shaking doesn’t make it heat up or expand any more.
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