Who figures it out? How do they know how many calories are in there? Like when it’s printed on a restaurant menu- does a restaurant just guess? And doesn’t that depend on exact measurements? Which we know can’t be exactly the same every time a person cooks a dish?
In: Chemistry
We have measured the heck out of everything that a human can digest. So, when you combine things that a human can eat together, you add the calories and that’s your meal.
It won’t be exactly the same every time. Nobody cares if you have a bit more or less. There is no need for greater precision so greater precision is not used.
As for how we measured the things that a human can digest, we just burned them and measured the resulting temperature change. That’s more or less what your body does with it, but with extra steps.
Latest Answers