What can you do to unsweeten chilli?

Answer 1

There's a few common options. Personally I'd try adding a dob of sour cream or yogurt or whipped cream when I served it to cool it down.

I find acids like vinegar and lemon juice can be mildly effective as well

Answer 2

if there is sugar in it then you can add less or add a little more spices

Answer 3

add mustard powder in it