Dishsoap in the bathtub, gently scrubbing with a soft sponge. This got most of the skin oil and hot coco stains out. I did a second wash and let it soak in a detergent meant for antique textiles (I use for antique fabric, etc). A soak overnight got the rest of the coffee and curry stains out. Would likely work with the dish soap as well, but I wanted to try the textile soap. The curry stains appeared to remain a little when it was wet (likely oil), but can't be seen when dry.