[lobster_johnson]

You would put the pot directly on the scale, surely. No need for an intermediate container.

[ghc]

You'd put a pot of boiling water on a scale? Wouldn't that risk damaging it?

[lobster_johnson]

I don't make oatmeal, so I don't know the exact procedure, but if one is bring the water to a boil before putting in the oats, then the simple solution is just to use your serving bowl — the one you will eat the cooked meal from — instead. I do that with pasta, for example.