
All-Clad D3 (13-piece set) — heavy staining/discoloration after ~6-7 months. Best way to clean these/prevent this?
Hey all — picked up the All-Clad D3 13-piece set about 6-7 months ago. My girlfriend cooks with them regularly and is fairly new to cooking, so we’re not 100% sure what caused this, but over time they’ve developed the heavy staining/discoloration you can see in the photos.
Looking for guidance on:
**1.** Best method to strip this staining/discoloration back to bare stainless
**2.** Whether this is normal wear for D3 or a sign of overheating/misuse (any tips for cooking on stainless as a beginner would help too)
**3.** Any product recommendations (Bar Keepers Friend, etc.) that work well on this bronze/rainbow staining
**4.** How to prevent this going forward
Appreciate any tips from people who’ve dealt with this before.