Does any rice salad pressed in a mould become a kind of sushi?

[OhioOhioOhio]

Just that. Thanks.

I'm not sure the Japanese would agree with you...

Use proper sushi rice if you want it to be mouldable, most other rice would be a gluey mess if you tried it.

I'm sure the Japanese wouldn't agree... I just meant as a general non authentic rule.

I wouldn’t have thought so. My mum used to make up a couple of Batchelors Savory Rice packets and press them into a ring mould to make a “rice ring” which we’d have as a cold salad at parties when I was a kid.
Definitely not sushi.

I also think Sushi rice is mixed with a kind of 'sugar water' to make it stick!

But onigiri sushi?

You add sugar and vinegar to sushi rice which is quite round and sticky. Other rice doesn't work

Nope.

As a minimum to emulate sushi rice:

Needs vinegar to acidify it to stop the spores that cause food poisoning.

And then something sweet to counteract the acidity.

And needs to be a starchy rice, not rinsed or

And I still wouldn’t call it Sushi. But youd have the texture of the rice.