I had a noodle dish with bolognese stored in a glass tupperware container for about 6 days in the fridge. When getting ready to clean the empty container, I noticed orangey stains of fat on the glass. I put dish detergent in it and filled it with scalding hot water. Then I let it sit for awhile. I came back, emptied it, refilled with hot water and detergent and scrubbed it down as best as I could, repeating this twice. However, I can still smell the ground beef fat on the glass! And to make it worse, the fatty water ended up in my French press which was also in the sink. It got onto the glass and worked itself into the mesh of the press. I had washed it normally but first realized what had happened when my morning coffee tasted like beef broth... I would be grateful for any tricks anyone might know. Or do I have to boil these things and wash them like 3 times with new sponges? (I changed out sponges already multiple times bcs the fat gets stuck in them, too) Thank you!
Lose the sponge. It is just not acceptable in the kitchen. There is no way to get a sponge clean.
You want wash water to be warm, whatever feels nice on your hands. It's soap that removes fat, not hot water.
The yellow/brown stain indicates the fat was cooked on, same as you get on your oven. Baking soda is the first weapon against that. Make a paste of baking soda and water. Wipe it onto the stained glass or enameled oven and see if the stain gives up with a bit of rubbing with a damp cloth. If not, then let the paste dry and try again. Your oven might take two or more treatments, but it does not involve a lot of effort.
Over at www.apartmenttherapy.com/ they have lots of articles on cleaning glass oven doors, each better than all the others.