Why the Rice Deserves Your Full Attention

Ask anyone who has spent years behind a sushi counter what separates good sushi from great sushi, and the answer is rarely the fish. It is the rice. A beautifully cut piece of salmon will still disappoint if it is sitting on a claggy, cold lump of grain, and a modest slice of mackerel can taste sublime when the rice beneath it is seasoned well and holds together like a single, elegant mouthful.

Perfect sushi rice has a very particular character. Each grain should look glossy and slightly translucent, be tender but still offer the faintest resistance to the bite, and taste gently sweet and savoury rather than sharp with vinegar. It should be sticky enough to press into shape with your fingertips, yet loose enough that the grains remain distinct. Get these things right and you have mastered the single most important skill in Japanese home cooking.

Choose Short-Grain Rice (and Leave the Basmati Alone)

Sushi rice is short-grain japonica rice, and the variety you choose matters more than most people expect. The grains are plump and slightly rounded, with a high proportion of starch that gives the cooked rice its characteristic cling.

• Japanese short-grain varieties such as koshihikari or akitakomachi are the gold standard, prized for their delicate sweetness and glossy finish.
• Supermarket "sushi rice" is usually a perfectly respectable short-grain blend and an excellent place to start if you are new to all this.
• Medium-grain rice works as a fallback if you are caught short, though the texture will be a touch firmer and less clingy.
• Avoid long-grain, easy-cook and par-boiled rice entirely. These grains stay separate by design, which is the exact opposite of what you need.

Buy in small quantities and use it within a few months. Rice loses moisture and aroma with age, and stale rice cooks up dry and dull no matter how careful you are with the rest of the process.

Rinse, Then Soak — Never Skip Either

Uncooked sushi rice is coated in loose surface starch. If you cook it straight from the bag, that starch turns into a gluey, cloudy mess. Rinsing removes it, and the technique is gentler than you might think.

Put the rice in a large bowl, cover it with plenty of cold water, and swirl your fingertips through the grains in slow circles. Pour the cloudy water away, refill, and repeat. It usually takes four to six changes before the water runs almost clear — a faint haze is fine and actually desirable. Do not scrub or rub the grains aggressively between your palms, as this cracks them and makes the finished rice mushy.

Next, the soaking. Drain the rinsed rice in a fine sieve and leave it for fifteen minutes, then transfer it to your pan and cover with the cooking water. Let it sit for thirty minutes in summer or a full hour in winter. This allows the grains to absorb water evenly right through to the centre, so they cook at the same rate. Rushed rice has hard cores and soft edges.

The Water Ratio and Cooking Method

By weight, use 100g of rice to 120ml of water. So for 300g of rice — a generous amount for three or four people — you want 360ml of water. By volume, that is roughly one part rice to one and a tenth parts water. A little more water is needed if your rice is older or very dry.

For the stovetop method, use a heavy pan with a tight-fitting lid. Bring the rice and water to a brisk boil over a high heat, then immediately drop to the lowest setting your hob offers and cook, covered, for twelve to thirteen minutes. Resist every urge to lift the lid. The steam inside is doing the work.

After the cooking time, take the pan off the heat and let it stand, still covered, for ten to fifteen minutes. The rice finishes steaming itself and firms up beautifully. Then, and only then, fluff it gently with a paddle or fork.

• Watery rice usually means too much water or a lid that let steam escape.
• Crunchy rice usually means the heat was too high, the pan too thin, or the rice was not soaked.
• A rice cooker is a joy here — simply fill to the "sushi" line and let it do its thing.

Seasoning: The Sushi Vinegar That Makes It Sing

Sushi rice is seasoned, not just cooked. The dressing, known as awase-zu, is a simple blend of rice vinegar, sugar and salt. For 300g of uncooked rice, use 50ml rice vinegar, 25g caster sugar and 6g fine sea salt. Warm these together in a small pan over a low heat, stirring just until the sugar and salt dissolve. Do not let it boil, or you will lose the brightness of the vinegar.

Tip the hot cooked rice into a wide, shallow non-metallic bowl — a wooden hangiri if you have one, a large ceramic dish if you do not. Pour the dressing evenly over the rice and then use a wooden paddle to cut and fold rather than stir. Slice down through the rice at an angle, lift and turn it over, turning the bowl as you go. Meanwhile, fan the rice with a piece of card or a hand fan to drive off excess moisture and cool it quickly.

Aim for rice that is just above room temperature — warm enough to feel alive, cool enough not to steam. Season to taste: a little less sugar for sashimi, a touch more for robust fillings.

Cooling, Handling and the Mistakes That Trip Everyone Up

Once seasoned, keep the rice covered with a damp cloth at room temperature and use it within a few hours. Refrigeration is the enemy here: cold rice hardens, loses its gloss and refuses to stick together. If you must chill it, bring it back to room temperature gently before shaping.

• Do not stir the rice vigorously when adding the vinegar — you will mash the grains.
• Do not season rice while it is still scalding hot, or it will turn soggy.
• Do not use a metal bowl for mixing, as it can react with the vinegar and leave a metallic taste.
• Do not make more than you need. Sushi rice is at its best within an hour or two of cooking.

Practise these steps a few times and the whole process becomes second nature. Once your rice is glossy, fragrant and holding together perfectly, you will find everything else about making sushi — the rolling, the slicing, the arranging — suddenly feels far easier.