How are companies able to measure the amount of calories and composition of the packaged food they are selling? How do we as consumers know it’s accurate?

Question

How are companies able to measure the amount of calories and composition of the packaged food they are selling? How do we as consumers know it’s accurate?

In: Other

Answer 1

/u/The_D20_is_cast has it for the first part of your question. Caloric bombs are also known as bomb calorimeters if you want more info. As for how we know its accurate, its because the FDA (or equivalent food regulatory agency in other countries) requires it to be accurate, and companies can be fined for presenting incorrect nutritional information.