Combine the rice and water in a saucepan. Bring to a boil. Cover the pan and simmer for 45 minutes. Remove from heat and leave covered for an additional 10 minutes before moving it to the fridge to cool before using.
Using a sharp knive or mandoline, slice the vegetables into thin slices.
Place a nori sheet on a flat surface, shiny side down. On the edge nearest to you, place approximately 1/3 cup of the cooked and cooled rice. Use a spoon or your hand to flatten the rice. In the center of the flattened rice, place some of the thinly sliced vegetables.
Using a brush or your hand, wet the exposed nori with water. You don't want to soak it. Use just enough water to make it flexible.
Starting at the edge closest to you (where the rice and veggies are), roll! More detailed instructions and photos in the blog post will help with this process.
After you have your roll, you may find that you need to add a little more water to seal the edges.
Slice the rolls to your preferred thickness using a very sharp knife.
For a dipping sauce, combine the coconut aminos and toasted sesame oil. For an oil free sauce, omit the sesame oil.