Tamago Nigiri is a classic Japanese sushi dish consisting of a slice of sweet and savory rolled omelette placed on top of a small mound of sushi rice. The omelette is made by whisking together eggs, sugar, soy sauce, and mirin, then cooking it in a rectangular pan to create a thin, delicate layer. The omelette is then rolled tightly and sliced into bite-sized pieces. Tamago Nigiri is a popular choice for sushi lovers, offering a balance of flavors and textures.