Actually, it's funny you say that, but, when I was on a trip white water rafting on the Penobscott River a few years back in Maine, the guide made what he called "River Coffee" in the morning. They just had a pot of boiling water, with coffee grinds thrown in. After it boiled for a bit, he let it sit for a minute off the fire. The grinds settle to the bottom, and then he cracks a raw egg into it!

The egg mixes with the grinds on the bottom of the pot, cooks/congeals, and then you can pour off the coffee without getting many grinds. It's STRONG, but, that's what you need to wake up before you hit the class V rapids.