> "at best, the protein can sometimes be inferred from the nutritional information."

I looked at some recently in the UK and the nutritional information is always per 100g and says e.g. 11.5g protein. Is there something wrong with that meaning 11.5% without any inference, or are continental European nutritional information boxes presented differently?

In the US, at least in larger sized bags, flour seems to be treated as an ingredient and there might not be a nutritional fact label. I admit that I didn’t look that carefully last time I was in a European grocery store.

I imagine that the 11.5g you’re looking at really does mean 11.5%.

Ahh, I am just looking at 1Kg consumer/household bags, maybe commercial huge bags are different.

Maybe this is just a difference in where the label is. I found an actual nutrition fact panel on the flour’s website.

Huh? Processed ingredients don't generally get a pass on nutritional labeling requirements in the US. A bag of flour in a grocery store should have a label.

The European grocery-bought bag of sugar I have lying around has a regular nutritional label, including a list of ingredients. Spoilers: sugar is made out of sugar and contains almost 100g of sugar per 100g.

I checked some 25lb bags of flour (not from a grocery store) and they do not appear to have any nutritional facts label.

Ok, if they're meant to be marketed for food service, like a bakery regardless of who actually purchases them, then that does makes sense.