[scrozier]

You're right about the "serving" thing. But in the US, at least, a cup in a culinary context means precisely eight ounces.

[daemonologist]

Now we're tempted to go down the ounce rabbit hole (the US fluid ounce is based on the medieval British system, which is based on the density of wine, probably).

https://en.wikipedia.org/wiki/Fluid_ounce

[devonbleak]

Eight ounces by weight or by volume? /s

[scrozier]

Volume…sorry, should have made that distinction.