A few months ago I bought this Golden Acorn Casserole with the intent to resell it.
However, this grime proved to be a little too baked on. This is after the initial scrubbing and a couple more tries after that. I considered the Magic Eraser but it was too difficult to get it into that groove. I was also afraid the amount of scrubbing involved would ruin the finish.
Enter Bar Keepers Friend. First I put a rag on the bottom of the sink to keep the dish from slipping around. Then, as per the BKF instructions, I got the surface wet.
Now we sprinkle on the BKF:
So how do I deal with that pesky grove? The answer is this: My Pampered Chef Nylon Pan Scraper. This little piece of plastic is one of my favorite kitchen tools. (Tupperware also makes them.) Should you see one while thrifting, buy it!
Knowing the scraper alone will not do the trick and knowing the wonders of microfiber, I wrap the scraper in an old microfiber rag.
Now I bear down, and SCRUB!
Finally, progress!!! I worked my way around the dish adding more BKF as I went.
I also had to keep shifting the rag on the scraper. As you can see the sharp edge of the scraper can make holes in the rag. No big loss, it is a rag after all.
Voila! The grime is gone with no discernible difference in the finish.
Now I will never leave a piece of Pyrex behind because it is too dirty. I hope you won't either. I'm hoping to do more cleaning and restoration tutorials as a feature on the blog. Please let me know in the comments if this is something you would like to see. Thanks!