I don't know what proportions others use, but I mix equal parts of soy sauce and worchestershire(sp?) sauce, add 2 tablespoons of brown sugar, 1 tablespoon of liquid smoke, and a teaspoon of salt for each cup of marinade. Marinade meat (round steak is a good choice) for at least 4 hours, then place in dehydrator and sprinkle with coarse ground black pepper to taste. That's the way I like it anyway.