The label says all 7g sugar are added but there is no sugar in the ingredients.
I know oats do have naturally occurring sugars.
The brand is oat from Costco:
I've noticed the Califia Barista Oat milk brand has only 3g sugar / 240 ml.
So is there added sugar ?
Edit
Seems like this is a thing in the Oat Milk world, these guys went even further:
Best Answer
They are from the oats, which contain no sugar as a raw ingredient. Processing them to make milk converts some of the starch to sugar, so it is counted as added sugar as it does not appear in the raw ingredient.
From an article entitled Oatly challenged over “no added sugars” claim:
The same article provides an update about this from the FDA specific to the Nutrition Facts Label: