If your barbecue sauce is burned onto the glass cookware, your best bet to get the sauce off is going to be a combination of baking soda and dish soap. You're going to coat the bottom of the glass pan with baking soda and dish soap, letting this mixture soak for about 15 minutes. After the 15 minutes are up, grab a sponge and sprinkle more baking soda on the stubborn spots.
As you scrub the glass pan, the bits of burned barbecue sauce should come up. The hot water, baking soda and scrub sponge combination work well when you are trying to remove the leftover debris. If you have a magic eraser on hand, you can use this to get up any stubborn stains off of discolored Pyrex. Although the baking soda and dish soap combination works the best, this also does well. But you're going to need to use a bit more effort when trying to use a magic eraser. The benefit of the water, dish soap and baking soda combo is that you're allowing the pan to soak while the soap eats away at the dirt. The magic eraser, though, does do a great job at making a dent in getting rid of greasy build-ups. If you have fresh barbecue sauce on your glass pan, try soaking it first, then using the magic eraser. But if you have a direr situation, use the baking soda and dish soap combination. Sometimes greasy barbecue sauce can leave burn marks on glass cookware.
To clean up burnt glass, you're going to need baking soda, water, ammonia, a spray bottle and a sponge or soft cloths. Then, pour 2 teaspoons of baking soda on the cloth or onto the burnt glass. After the baking soda is on the glass, scrub the burnt areas and rinse with water. Next, spray the surface with ammonia and scrub again with a soft cloth. When the surface is clean, remove any cleaning residue. It's super easy to stain glass pans, so you want to avoid any messes before they do actual damage to your pan. Although it may seem inevitable that your pan will get dirty, which it always will, prevention starts after you've finished cooking. It may be tempting to want to leave your dirty dishes in the sink or on the stove, but the longer the barbecue sauce stays in the glass pan, the harder it will be to get that sauce off, leaving you with burnt glass. A rush job is better than no job at all, but you don't want to leave grease stains on your glass pan repeatedly. After you wash the pan, always dry it and make sure that barbecue sauce residue isn't still on the pan. Make a mixture of baking soda and water into a paste,rub onto the burnt glass with a cloth. Leave on long enough for the solution to loosen the stains. If there is still residue mix a little amonia into dish soap and clean with that. Place glasses in a Zip Lock bag with Ammonia and let sit overnight. I agree - all you'd need is a little bit of ammonia in the bottom of the bag, then seal it up. The fumes will loosen the mess, it works great on burnt-on messes from my stove-top grates so I'm guessing it would work great on this as well. I am not sure if it is marketed there yet (see pic), it is basically oil from citrus skin --lemons/oranges. TSP - Tri-Sodium-Phosphate can really clean these up. If you do not have it in India consider buying it online. @Jennie Lee Yes but it is still called TSP & works wonders; will cut the crud, & shine the glasses up beautifully! I agree with the other posters that ammonia will do the trick, but it can be nasty to play with.
If you can get a citrus based oil, that's even better than vegetable. All set of glasses were packed in a carton..and during night the bulb above it fell down over it due to short circuit. I was lucky that only this carton caught fire and rest nothing was harmed. In the motning when i smekt smoke i opened the room and found the glasses in this shape. I think either vinegar or ammonia should work, and they're cheap. Don't use anything abrasive, or you'll scratch your pretty glasses! Sodium bicarbonate does the job together with vinegar.. I was concerned that someone in India might actually end up buying REAL tri-sodium phosphate, which is nasty enough that the U.S.
And personally, I'd try cheaper everyday household products first. If you did ruin the finish, maybe you could clean them and then frost them.