Prepare your bamboo sushi mat: Cover your bamboo sushi mat with plastic wrap. This will help keep the rice from sticking to it.
Tear or cut the nori sheet in half: Fold the nori sheet in half and gently tear along the seam. If it does not tear easily, use kitchen shears to cut the nori sheet in half
Press rice onto nori sheets: Next, place the nori sheet onto the plastic wrap with the shiny side facing down. Then press around 1/2 cup of rice onto about 3/4 of the nori sheet in an even layer. Leave about 1/4 of the nori sheet without rice as this will help seal the roll. Tip: Combine a bowl of water and a splash of rice vinegar and use to wet your hands prior to handling the sushi rice. This will prevent the rice from sticking to your hands.
Slice the avocados: Slice the avocado in half the long way. Remove the seed and cut each half into around 6 slices. Each whole avocado should yield around 12 slices. I often cut the slices right out of the avocado half and add directly to the roll to ensure freshness.You can also drizzle a little lemon juice over your cut avocado to prevent it from browning in your roll. Add the avocado to the roll: Add around 3 avocado slices in a row across the nori sheet.
Roll the sushi: Wet the part of the nori sheet that does not contain rice. Starting at the side of the nori sheet with rice, use the bamboo sushi mat to fold your roll until it's completely enclosed. Once the nori is making contact with the rice, pull back the sushi mat so it doesn't get caught in the sushi. Still using the sushi mat as your guide, finish rolling until the roll is completely wrapped. Then wrap the sushi mat around the roll and gently press, tightening the roll together.Keep in mind that rolling sushi is an art that may take some practice so don’t get frustrated if it doesn’t look perfect your first time. It will get easier the more you do it. Cut the roll: Using a sharp knife, cut the roll into 8 pieces. I do this by first cutting the roll in half. Then cutting each half in half. Then cutting each fourth in half. Tip: Be sure to clean and wet the edge of your knife before cutting each roll.
Serve and enjoy: I usually serve with soy sauce and wasabi. Sushi rolls are traditionally served with pickled ginger as well.