[Reason077]

The ~180ml rice cups have been around for at least as long as rice cookers have existed.

It makes sense because 1 rice cup is the right amount of uncooked rice to make a decent serving for 1 person. A metric cup is too much!

[redcap]

I don't know how much rice you eat, but my experience has been that 1 rice cup cooks enough rice for a modest serving for 2 adults - in our household at least.

[chipsa]

The general idea is that a cup of rice is the main portion of the meal, and the rest of the meal is add ons (mostly veggies with a bit of meat). If the rice is just a side to the entree, then yeah, you're going to be eating less of it.

[innocenat]

That's the idea but as someone who have been in Asia all my life rarely do people eat the entire cup per meal. 0.5-0.7 cup per person is more common this days for standard meal.