It’s a testament to the durability of classic Corning Ware /Pyrex dishes that you can still find relatively undamaged pieces purchased more than 50 years ago. Just as impressive is their resistance to permanent stains. While chips or cracks can’t be undone, dark stains from baking or scratches from silverware often can be removed with a little effort. I’ve purchased many pieces that looked pretty beat up on the shelf but that cleaned up nicely after I brought them home.
Vintage Pyrex and Corning Ware dishes are consistent best sellers in my vintage Etsy shop. Customers often tell me that classic patterns from the 1950s, ’60s and ’70s remind them of their childhoods and baking in their mother’s kitchens. The classic Cornflower Blue casserole dish, for example, was once chiefly valued by the home cook for its durable construction and versatility. While we still value its practicality, we also love its midcentury style. Collectors of vintage Pyrex now proudly display their latest acquisitions and seek out rare sizes and patterns to round out their collection.
Below are some of the cleaning methods I’ve used and found to be effective. Before you try any of these suggestions, first wash your Pyrex in warm soapy water using a mild dish detergent. I use Palmolive, which is inexpensive and very good at cutting grease. After a gentle washing, dry the piece and examine it for marks to see if you need to take tougher measures. If so, try one or several of the following:
2. Barkeeper’s Friend. I started using this product after reading about it on Pyrex Love, a wonderful resource for researching vintage Pyrex patterns and related topics. I started with the liquid form but now prefer the powdered variety that comes in a can similar to the one used for Comet. It’s inexpensive and can be purchased on Amazon. As noted by Pyrex Love, this product is particularly good for removing metal marks. Personally, I have found this to be true. It’s helped me to remove seemingly intractable dark metal marks that wouldn’t even fade using regular dish detergent or the magic eraser. Pyrex Love cautions not to use BF on the colored or gold leaf portions of Pyrex patterns. It’s probably wise to use caution; however I’ve tried it on all types of Pyrex pieces without any problem. Just use common sense and don’t scrub too hard or soak too long. All of these products have chemicals that could possibly affect the color or finish of your piece if overused.
3. Baking Soda. This is an old standby when it comes to removing any type of stain. When stuck as to how to get rid of a stain, I often try a little baking soda mixed with a little water (about 3 parts soda to 1 part water). I usually pat a little of the solution on the stained area and wait a minute or so, then gently rub it off and rinse. I’m not sure why, but it sometimes works when other methods fail.
In addition to the above, I’ve also used toothpicks or tiny straight pins to get baked-in food out of crevices. Of course, you have to be gentle and very careful not to leave scratches.
There are also a few things you SHOULD NOT try. Harsh cleansers such as Comet contain bleach which can lead to fading over time. Similarly, do not regularly put your Pyrex into the dishwasher if you want the colors to remain vibrant. Pyrex Love also cautions against heating a Pyrex dish on the stovetop before cleaning it, as some sites apparently have recommended. Although the strategy has worked for some, you risk shattering the glass.
I hope you find these tips useful as you add to your Pyrex collection!