I have a steamer, and I made tilapia in it, and the turmeric stained up the clear plastic and the whole machine is that "glowing highlighter yellow" color of turmeric!!
doesn't look too good sitting on my kitchen counter like that :) !!
one of those vegetable / fish / rice / anything that fits in it steamers
it's a krups optisteam plus
I tried running about a 50/50 mix of water and vinegar in it for two hours :)
didn't help any with the stain, but definitely cleaned out the heating unit!