How can something have zero calories in one serving but ten calories in three servings?

Question

I have a flavored sparkling water and it has ten calories in the container (1 liter), but zero per serving (12 fl oz). Isn’t that a little over 3 calories per serving?

In: 1

Answer 1

USofA allows rounding. If in a serving, calories are below a certain threshold, you can call it zero. TicTacs are a prime example. They are listed as 0g of sugar per serving, despite being 90% sugar. This is because one serving is one single mint, which weighs 0.49g. If a serving has less than 0.5g of sugar, it can be rounded down to 0g.