I have adapted Heidi Swanson's (http://www.101cookbooks.com/archives/vegetarian-lentil-burgers-recipe.html) method here for serving the burger. I had read it a long time ago and always wanted to try it. However, I found it tough to slit the patty laterally maybe due to my lack of finesse. So I just created small patties, and added the salad veggies or toppings in between. I have used plain white all purpose flour in addition to some potatoes as a binder. This surely adds some carb content but I used whatever I had on hand. You can add a beaten egg or two, use flax, almond flour or bread crumbs - anything that holds the patty together. These go pretty fast and one person can easily eat 2 or three of these as a sumptuous snack. These burgers have a heavy double dose of veggies, because there are vegetables in the patty and we also use them as stuffing.
I hope you like this recipe for the soya vegetable burger.