How about when a recipe tells you to let something soak / marinate / rise / whatever "overnight". When really should I start? When really does it end? Is 8am one day to 4pm the next day (32h) the same as 9pm one day to 7am the next day (10h)?
The day I learned that the acidic feel of pineapples comes from it actually digesting you instead of the opposite is the day I stopped using them.
Wait, what?
https://www.thespruceeats.com/flesh-eating-enzymes-of-pineap...