Smaller portion = less sugar, fat, salt, calories etc... If I remember correctly a few states have addressed making unrealistic portion sizes for the label as making misleading claims.

Nutrients should always be listed in pr 100g or in percent (effectively the same).

They are almost always 1 oz (28g).

But, individually packaged stuff does tend to pull bullshit like “1 serving=half a bottle of soda”

Peanut butter is probably going to be fine though

Tic tacs have a serving size of less than a gram so they can claim 0g of sugar.

Tic-tacs are 94% sugar. A serving of tic-tacs is 1 tic-tac, which is just under half a gram. The FDA considers less than half a gram of sugar in a serving to be negligible and not required to be listed.

In other words, a product that is 94% sugar is legally sugar-free.

In the EU (probably in the rest of europe too) you must have a per 100 gram (you can have bullshit "portions" too if you want to, but the "per 100 gram" must be there).

How the hell do you americans compare different brands??

As someone who, if anything, wants to gain weight, this has the inverse effect for me. Peanut butter is great because it's so dense with calories. (I try to avoid sugar though, but I don't think peanut butter has much added sugar, but I'll have to check next time I have some.)

I know I'm in the minority though. I'm a 6ft tall man who weighs ~125-130lb. I was stuck at 120 for a decade or more, and only recently have put on a couple more pounds. I don't have an eating disorder or anything, but I just struggle to put on weight, so my serving sizes personally for peanut butter are way higher than average.

Wtf peanut butter you get into that's got sugar?