Why the Rice Matters More Than the Fish

When people book their first sushi making course, they usually arrive with their heads full of tuna, salmon and razor-sharp knives. By the end of the first hour, most have quietly changed their minds. Sushi is, at its heart, a rice dish. The fish is the garnish; the rice is the foundation. Get the grain wrong and no amount of knife skill will rescue you — the rolls will slump, the nigiri will refuse to hold, and the whole plate will taste of plain boiled rice rather than the glossy, gently seasoned, faintly sweet bed that proper sushi demands.

So before you worry about fillings, it is worth understanding what actually separates sushi rice from the bag of long-grain sitting in your cupboard.

How Grain Length Changes Everything

Rice is grouped by grain length, and that single measurement dictates how the cooked grain behaves. The key is the balance of two starches: amylose, which keeps grains firm and separate, and amylopectin, which makes them sticky and clingy.

• Long-grain — basmati, jasmine and most supermarket everyday rice. High in amylose, so it cooks up loose, fluffy and distinct. It will never clump, which is exactly the problem for sushi.
• Medium-grain — shorter and plumper, with a moderate starch balance. Slightly sticky, slightly tender, a decent middle ground for many Asian dishes.
• Short-grain — stubby, pearl-like grains packed with amylopectin. This is the sticky, clinging, faintly sweet style that sushi is built on.

For sushi you want stickiness, but controlled stickiness. The grains should hold together when pressed yet separate cleanly on the tongue — never a paste, never a pudding.

Short-Grain: The Classic Choice

If a packet says "sushi rice", it is almost certainly a short-grain japonica variety. These are the grains used across Japan for nigiri and maki, and they are the safest starting point for anyone learning at home.

Look for names such as koshihikari, widely regarded as the benchmark for sweetness and balance, or akitakomachi and sasanishiki, both prized for their clean, slightly firm bite. Japanese-grown rice tends to be the most consistent, though excellent short-grain is also grown in Italy, Spain and Australia, often at a friendlier price.

What you are looking for in the bag is a grain that is short, rounded and slightly translucent, with very few broken pieces. Broken grains release starch too quickly and give you a gluey, uneven pot of rice. When cooked and seasoned, good short-grain should look glossy, feel springy between your fingers, and smell faintly of fresh grain rather than cardboard.

Medium-Grain and Specialty Grains

Medium-grain rice, sometimes sold as calrose or simply "medium-grain sushi rice", is the practical compromise. It is less sticky than true short-grain, which makes it slightly easier to handle for beginners and notably cheaper. It works well for inside-out rolls and for anyone feeding a crowd, though the texture is a touch less yielding and it can dry out faster once rolled.

Beyond the classics, there is a whole world of specialty grains worth experimenting with:

• Brown or genmai rice — nutty and chewier, with the bran still attached. It needs a longer soak and more water, and it takes seasoning less readily, so dress it lightly.
• Haiga rice — part-milled, keeping the germ but removing the bran. A gentle halfway house between white and brown.
• Black and red rice — striking in colour and earthy in flavour. Best used blended with white short-grain at around one part speciality to three parts white, otherwise the rolls will not bind.
• Sprouted or germinated rice — softer and slightly sweeter, with a delicate texture that suits lighter fillings.

Matching the Grain to the Style

Different sushi styles ask different things of the rice. Nigiri needs a grain with enough cling to be shaped by hand without compacting — short-grain is essential here. Maki and temaki are more forgiving, and medium-grain can work if you press gently. Inari, where seasoned rice is tucked into sweet fried tofu pouches, benefits from a slightly firmer grain that holds its shape. Chirashi, scattered in a bowl, is the most relaxed of all and a lovely way to use up a less-than-perfect batch. Onigiri sit somewhere between, needing stickiness without greasiness.

Buying, Storing and Cooking

Buy rice in quantities you will use within a few months. It is a living product and it dulls with age, so a fresh 1kg bag beats a dusty 5kg sack every time. Store it in an airtight container away from heat and light, and never in the fridge, where it will absorb moisture and odours.

Rinse your rice in cold water until it runs almost clear — usually four to six changes — then soak it for 30 minutes before cooking. The traditional ratio is one part rice to 1.1 parts water by volume, though you may need slightly more for older or brown rice. Cook it covered, undisturbed, then let it rest for ten minutes before folding through your seasoned vinegar mixture with a cutting motion rather than a stir. Use a wide, shallow dish and a fan or a cool breeze to bring it down to body temperature quickly.

Get those fundamentals right and you will notice the difference in your very first roll. The rice should taste seasoned but not sharp, hold together but never clump, and let every filling sing through. That, more than any knife, is what makes good sushi.