Lay out your bamboo mat with an piece of plastic wrapped around it (optional: to keep the mat clean).
For a traditional roll, place a sheet of nori (shiny side down) on the mat.
Spread a layer of rice evenly over the nori (not too thick) leaving a small space at the top of the sheet.
Place your ingredients in the bottom third of the nori sheet in a couple rows.
Pick up the bottom edge of the nori and pull it up and over the filling ingredients rolling it away from you (curl your fingers over the bamboo mat and gently press along the length of the log through the mat). This will gently compress the filling and rice together.
Continue to roll and press along the log (lifting the mat out of the way as you roll) until you've rolled past the far edge of the nori sheet. See details for inside out rolls in recipe post.
Place the rolls in the fridge wrapped in plastic until it's time to serve them.
At serving time, take a very sharp, clean-edged knife, dip the tip into water, hold the tip of the blade up and let the water run down and off the blade. Wipe the blade between each cut.
Slice the sushi roll in half. Slice each half in half, slice each quarter in half. This will ensure you have 8 evenly cut pieces.
Decorate the top of your rolls with crispy sweet potato shoestrings, a dab of Vegenaise with a jalapeno slice or strawberry slice, some pickled radishes or thinly sliced avocados.
Arrange them on a serving plate and serve with dipping sauces, pickled ginger, and toasted sesame seeds.