I use just plain old simple old Dawn dish detergent, along w/
boiling hot water in a large mug & soft tooth brush. Works pretty
well. It really breaks up the grease, and unlike when used w/
ammonia, it’s gentle on turq., jade, and other porous stones that
Rich so generously provides for me. Operative is HOT, HOT water. I
actually use the teakettle when the instant hot isn’t hot enough. I
don’t have a steamer. Knowing you, you’ve probably already done this.
At your suggestion a long time ago on Orchid, I finally purchased an
ionic cleaner. It is so fun to see that tarnish disappear on
sterling. Will help me a lot before the shows that I do.