Put 850 g Sushi rice into a fine sieve and rinse under cold water for 4 minutes. Use your hand to gently turn the rice round until the water runs clear.
Put the rinsed rice and 1 litre Water into a large pan with a tight fitting lid. Put on a medium heat until the water begins to simmer - about 6 minutes.
Reduce the heat to low and cook until all the water has absorbed. This will take around 15 minutes.
Remove from the heat but keep covered. Let the rice steam in the pan for 10 minutes.
Meanwhile, in a small saucepan, add 60 ml Rice vinegar, 4 teaspoon Sugar and 1 pinch Sea salt. Heat over a medium heat until just simmering. Remove from the heat and stir until all the sugar has dissolved.
Transfer the cooked rice to a large bowl. Pour over the vinegar mixture. Use a wooden spatula to chop the seasoning into the rice. Then carefully fold it into the cooked rice.
Cover the rice with a damp towel and leave to cool before using it to make sushi. Make sure the towel is in contact with the rice.
Notes
Rice typically triples in weight and volume once cooked. To work out how much raw rice you will need for a recipe, divide the amount of cooked rice by 3.
For the best texture rice, let the rice soak in cold water for at least 30 minutes before you start cooking it. This lets the rice rehydrate and gives the best texture. We skipped this step though as it does add to the process time. If you do this, then don't add as much water as we have, because the rice will get too mushy.
Do NOT lift the lid when left to steam. It needs this full steaming time.
Instead of sugar, you could use honey for a natural sweetener.
It might not look like a lot of water, but it is the right amount.