We've reviewed all sorts of special gadgets and methods for making your morning cup of coffee, but what if you're stuck without a coffee pot, a French press, an Aeropress, or a Chemex? Other than running out to the local coffee shop, what are your options? Well, according to the January issue of Gourmet, cowboy coffee is your best bet. They give a recipe for Coffee Boiled with Eggshells, which has also been known as cowboy coffee or camping coffee, and it's one of the simplest ways to make a brew.
You simply boil the water and coffee grounds with some eggshells, which help clarify the brew. You let it settle then strain or carefully just dip out the liquid coffee, leaving the grounds at the bottom.
Have you ever tried camping coffee? We assume the boiling takes care of any health issues with eggshells but this still sounds fairly primitive. Not to mention strong - sounds like it turns out a cup of mud to keep you in the saddle all day long!