I'm a lazy cook and usually use ready-made ナステオナスiツ酢.
To make ナステオナスiツ酢, mix
- vinegar 100cc
- sugar 1 tablespoon (15cc)
- salt 1 teaspoon (5cc)
and heat it in a small pan on low heat or in microwave oven till the sugar and the salt are dissolved. (No need to boil - just warm it up and stir with a spoon.)
You have to sprinkle this ナステオナスiツ酢 over the rice right after the rice is cooked - I mean, while it is steaming hot! Mix the rice and vinegar well, turning the rice over and over with ナステ帚?「ツカナスナ。 or ニ蜘ニ停?ー (or a big spoon if you don't have 窶堋オ窶堙。窶堙?窶堋カ). Do you have a 窶冂ツ静ョ uchiwa? You have to fan the rice while mixing and turning, to cool down the rice. This gives nice, glossy look (窶堙や?堙「) to the rice. If you don't have uchiwa, a piece of cardboard or something with which you can fan the rice.
When I was small, my mother often made me "help" her preparing sushi rice, and my job was to fan vigorously while she was mixing the rice and vinegar.
She scolded me that my fanning is not strong enough, usually ended up to snatched a way the uchiwa from me (out of frustration) and fanning it herself...
About 2 tablespoon ナステオナスiツ酢 for 1 cup (200cc) of rice (note: the measurement of the rice
before cooked) will do. Adjust the quantity to your taste.
ツ債ゥ窶「z would add a very nice flavour. Put a piece of ツ債ゥ窶「z on the rice before cooking in a rice cooker or a pan. Remove the ツ債ゥ窶「z when the rice is cooked and mix the rice before adding the vinegar.
Or if powdered ツ債ゥ窶「z窶卮 is available, add it before cooking the rice, or add a very small quantity to the ナステオナスiツ酢 (a few pinches, or 1/4 of teaspoon).