Red wine and real strong coffee, nice colours, I thought. Plenty of mess but...no colours! The tiles must contain a lot of bleaching agent because the spill was barely visible.
I have found some watercolour paper recently that my mother bought 28 years ago for a pastels class that she did not enjoy. The paper is not quite white anymore but hey :) Red wine, Adele's string, Shattuck, Fengle and a few recalcitrant Zingers and I'm done. I've had some great advice from Eni Oken lately and feel it's helping my shading a lot.