The question that follows naturally is how do you define "processed food"? Different people have different definitions for this, so it's a rather vague term.

To some people, it means anything you can't make in your own kitchen. However sausages are commonly cited as an example of processed food, and those are relatively simple to make at home, using the exact same ingredients as the commercially-produced sausages you buy in a store.

Others consider it to mean anything made commercially, in a factory and not by hand, others would only include pre-packaged ready-to-heat box meals, others again have yet another definition, and may talk about "minimally processed foods" and "ultra-processed foods".

Without context, we may not even be talking about the same thing.

Unfortunately coming up with a concise definition of exactly what constitutes "processed food" is exceedingly hard, because all food preparation includes some amount of processing.