Fruits and vegetables get processed, put into plastic bags, and shipped far away to be consumed 6 months after being produced all the time. None of that makes them ultra processed.

Ultra processed food is foods broken down into base chemicals and stored in vats or boxes like it’s baking soda for years before being turned back into food. Many things we make from corn in particular, and I would probably include commercial orange juice in this as well. I don’t drink the stuff anymore. That’s gross.

So tinned, or frozen veg?

No, those do not count as ultra processed.

if it is full of preservatives, yes. Obviously, just frozen vegetables isn’t ultra processed.

This is not at all obvious. Freezing veggies involves washing, cutting, and blanching processes and vegetables may be subjected to ultrasound during freezing to accelerate the process.