In reply to UKC Gear:
What an absolute waste. We don't need more disposable stuff on the mountain, or in the world in general.
The clip-on one-use sachets used by the Koreans are definitely a Far East thing (I spent a few years in the East). The problem with them (besides being disposable) is that the quality of the coffee is absolutely terrible.
Best solution for coffee on the mountainside? A plastic cone filter. Weighs next to nothing, costs next to nothing, and makes a decent cup. Filter paper improves the taste, but isn't strictly necessary. MSR makes a good paperless one.
But you've got to buy good coffee in the first place. I have tried every major brand in the UK, and the only coffee worth buying in any supermarket is M&S Luxury Italian. That's the cheap option. For better coffee, you have to go to a roaster like Monmouth, Square Mile, etc in London or others elsewhere. Shit coffee, whether in a French Press or £10,000 professional rig or boil-in-the-bag, is still shit.