So, can you use cornstarch to thicken soup? Yes, and you should. It’s fast, easy, and works like a charm.
Just remember the golden rules: make a slurry, add it to simmering liquid, and don’t boil it to death. And never tell your guests you used cornstarch. Let them think you’re a French chef.
Now go forth and thicken! Or, you know, just eat the watery soup. Nobody’s judging. Except maybe your soup. It’s definitely judging you.