Being office based sales droids, slaves to the icon Te-Le-Fon, the peeps in my ossiffe inc. moi require regular and instant 'coffee' in various forms. Decaff, black, white etc.
One of our number recently brought some sachets which claimed to be 'real ground coffee' which dissolved in hot water giving 'instant' real coffee. I think the labels said something about 'ultra-ground' or something but I wasn't taking much notice. (I'm with Richard Burton when it comes to coffee, let it go cold and you can't taste it!)
I have to say the results were surprisingly palatable and may have contained at least traces of real coffee. I'll try to find out what it was cos it was simply tear, add water, serve.