This mixing made sense to me (I'm in the US) but you're right that it's odd. Drinking cups and mugs are often sold in oz units in the US, but if you have a mea

This mixing made sense to me (I'm in the US) but you're right that it's odd. Drinking cups and mugs are often sold in oz units in the US, but if you have a measuring scale and cup, g an ml are sometimes more precisely reported/demarcated. I also think buying ingredients online sometimes increasingly is in metric. The US is increasingly more mixed in unit use than is acknowledged. Temp and speed are the main holdouts. [As an additional later comment, I also realized I don't like measurements for recipes in oz because it can be confusing if it's referring to weight or volume.]