Boil the Sushi Rice until tender. Then let it cool.
Gently place 1 seaweed sheet on a hard surface and evenly spread 1/3 of the Sushi Rice onto it. Smooth out the rice until it is flat.
Slice the avocado, mushrooms, and spinach then place them in a straight line (side by side) onto the Sushi Rice.
Tightly roll end to end of the seaweed with all ingredients then slice with a sharp knife.
Repeat this process for the other 2 seaweed sheets.
For the Dipping Sauce: Combine all ingrendients together in a small bowl then whisk until smooth.