If the bottom of your large stainless steel pot has warped and is no longer making proper contact with an induction cooktop, it can be challenging to fix the warping itself. However, there are a few potential solutions you can try to mitigate the issue:
Use a different cookware: If the pot's warping is significant, it might be best to retire it for induction cooking and find a new pot with a flat and smooth bottom that makes proper contact with the cooktop.
Cook on a different stove: If you have a gas or electric stove available, you can use the warped pot on those stovetops instead of the induction cooktop.
Induction interface disc: Consider using an induction interface disc or induction converter disc. These discs are typically made of magnetic stainless steel and act as an intermediary between the induction cooktop and your pot. They help spread the magnetic field and heat more evenly, compensating for the pot's warped bottom. However, keep in mind that using an interface disc might reduce the efficiency and responsiveness of induction cooking.
Seek professional repair: If the warping issue is due to a manufacturing defect or occurred under normal use, you may want to reach out to the manufacturer to inquire about a replacement or repair.
Check for cookware warranties: If the pot is relatively new, check if it's still under warranty. Some manufacturers offer warranties for cookware and might be able to provide a replacement or refund.
Avoid high heat: To prevent further warping of cookware, try to avoid using high heat settings on induction cooktops. Cooking at lower temperatures can reduce the risk of warping.
Remember, warping can often occur due to extreme temperature changes or improper handling, and it might not be reversible. If none of these solutions work, it's best to invest in a new pot suitable for induction cooktops to ensure safe and efficient cooking.