Hold a tane (sushi topping) on the palm of the left hand, take a suitable amount of sushi rice with the right hand, develop it into the desired shape (called sharidama [rice ball]), take wasabi on the index finger, paste it on the tane, and place the sharidama on the pasted tane.
左手にタネを持ち、右手ですし飯を適量とって軽くまとめ（シャリ玉という）、ワサビを人差し指でとってタネにぬってシャリ玉を乗せる。