I have to say that Gimmie Lean's sausage is one of my favorite faux meats (I am not a fan of most fake meat)
Here are the ingredients
Water, textured soy protein concentrate, textured soy protein, tapioca starch, soy sauce (water, soybeans, salt, wheat), less than 2% of: soy protein concentrate, cellulose gum, soy protein isolate, sea salt, natural flavor (from plant sources), soy milk powder, evaporated cane syrup, vital wheat gluten, spices, salt, barley malt extract, beet powder (color), torula yeast, yeast extract.
I agree with Isa, you need something to get it to stick together...it is rather sticky and that is kind of what makes it good! I see tapioca starch is pretty high up there on the ingredient list. Cellulose gum is in there too.
Also, besides water, soy protein concentrate is the main ingredient, which may lend to the texture as well.
I found some information on it online, it seems more like a commerical ingredient, rather than one you can make at home, although this article does discuss how you can do it (soaking soy flakes in alcohol - sounds scary)http://www.livestrong.com/article/41076 ... ncentrate/
Personally, I would try playing with binding ingredients, as well as vital wheat gluten to try and get the consistancy.