It depends. Some are thicker than others. A Hosomaki, literally translating to "thin roll", is typically about 2 1/2 cm in diameter. On the other hand a Futomaki, literally translating to "thick/fat roll", is typically 5-6 cm in diameter. The size usually varies depending on how many fillings are in your roll, or (if you make them at home) how thick you slice your fillings.
However big the person making it wants it to be.
Just ask them for a speceial roll or chef signature roll.
Typically, about 1 cup of sushi rice is used per roll of sushi.
One may learn to make a sushi roll by using the site PBS. They have a quick video that shows the step by step process to making a great authentic sushi roll.
The first sushi roll that would be recognizable today was created by Hanaya Yohei in around 1830. Sushi has been eaten for many centuries, however the contemporary roll is a relatively new device.
255 per roll
The differences between types of rolls are unique to different restaurants. An order of a roll is normally a set of 6-8 small rolls. A sushi hand roll is about the same amount of food as the other rolls, but served in one cone of seaweed that fits easily in someone's hand.
Rainbow Roll Nigiri Chirashi Temaki Maki
The cast of A Sushi Love Story - 2010 includes: Sushi Roll as Mr. Sushi
A Japanese roll of sushi that smells like blue cheese
To properly roll sushi, start by placing a sheet of seaweed on a bamboo mat. Spread a thin layer of sushi rice on the seaweed, leaving a small space at the top. Add your desired fillings in a line across the rice. Use the bamboo mat to tightly roll the sushi, applying pressure as you go. Wet the edge of the seaweed to seal the roll. Slice the roll into pieces and enjoy!
There may be many different things in a sushi making kit. One factor is how big the sushi making kit is. For a standard, small, sushi making kit, there may be seaweed, a bamboo roll, and some powdered vinegar, along with a recipe book.