Give it a wash with white vinegar and see how it looks dry. If you have hard water, it could be a lime deposit. The vinegar will take care of that.

Thanks for responding. We have a whole house water softener and the water does not seem to have been the problem. I contacted Staub; they said to use Barkeepers Friend, but that did not help either. They said that their cookware is dishwasher safe, but they recommend hand washing. I am not sure what that means.

Darned. Both the vinegar and the BKF are mildly acidic, so if the haze is a deposit, you should notice some difference. But if you still see it, then it might be damaged. Does Staub have a guarantee?

I wrote to them and they do have a guarantee. They have asked me to send them the pot. We shall see. . .

Interesting. I had this same issue with a pot in grenadine.