Latkes
Mix the flaxseed with the water in a small bowl and let sit to thicken. Meanwhile, grate the potatoes. Wrap them in a clean dishtowel and squeeze the excess liquid out of them. Transfer the potatoes to a large bowl. Grate the onion and squeeze the onion to remove the excess liquid. Add the onion to the potatoes.
Add the flaxseed/water mixture to the bowl. This is your binder. Add all the other ingredients to the bowl and mix well. Use your judgment whether the mixture feels like it will hold; if it feels very loose, add more breadcrumbs (you could also add some potato starch if you want).