In English we could say broth.

Depends, before or during/after the ingredients are added and/or removed? Before, it'd just be referred to as water. During/after, probably most appropriate to refer to it as "soup". Though, since the Anglosphere doesn't really have an equivalent or analogue (the closest being 'fondue', but it is fundamentally a very different food), there's a case for calling it a number of different things with varying levels of justification, hence I tend to use "soup" (rather than "stock" and others).

I always say "soup"

Thank you !

火锅汤