Chef Yama

MUST Know SUSHI RICE Secrets By Former Michelin Star Chef Yama

15 August 2026 · 4:57 watch

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Former Michelin-starred chef Hiroaki Yamamoto reveals the essential washing, soaking, cooking, and mixing techniques for perfect sushi rice using a rice cooker.

Key takeaways

  • Thorough, gentle washing is essential to remove excess surface starch and prevent gumminess.
  • A dedicated soaking step ensures uniform water absorption, preventing hard-centred grains.
  • Accurate water-to-rice ratios must account for pre-cook soaking to ensure perfect texture.
  • Sushi vinegar must be folded into hot rice using a cutting motion to avoid crushing the grains.

In high-end Japanese gastronomy, sushi rice (shari) is not merely an accompaniment; it is the core foundation upon which the entire discipline rests. For a professional sushi chef, mastering this grain is a lifelong pursuit. In this masterclass, former Michelin-starred chef Hiroaki Yamamoto (Chef Yama) deconstructs the meticulous process of preparing perfect sushi rice. Drawing on over two decades of elite culinary experience, Yamamoto reveals the foundational mechanics that lift humble grains into Michelin-grade shari, utilising the efficiency of a high-quality rice cooker without sacrificing traditional standards.\n\n## The Foundation: Washing and Soaking\nThe journey to flawless sushi rice begins long before the heat is applied. Chef Yama emphasises that the preparation stage is critical for achieving the ideal balance of stickiness and individual grain definition. The process initiates with a rigorous yet gentle washing technique. This step is designed to strip away excess surface starches that would otherwise cause the cooked rice to become unpleasantly gummy.\n\nFollowing a thorough wash, the rice must undergo a dedicated soaking phase. This crucial resting period ensures that moisture penetrates to the very core of each grain. Skipping or rushing this stage leads to unevenly cooked rice with hard centres—a critical defect in professional sushi preparation. Proper hydration ensures that when the rice cooks, the starch gelatinises uniformly.\n\n## Precision Cooking and Dressing\nOnce perfectly hydrated, the rice is cooked using a high-quality rice cooker, a tool favoured by modern Japanese master chefs for its precise temperature regulation and consistency. Chef Yama highlights the absolute necessity of exact water-to-rice ratios, which must be calibrated meticulously to account for the moisture absorbed during the soak.\n\nThe final, most delicate stage is the integration of the sushi vinegar (sushi-zu). Yamamoto demonstrates the precise timing and quantity required to season the rice while it is still piping hot. The mixing technique itself is an art; chefs must use a gentle cutting and folding motion rather than stirring. This disperses the seasoned vinegar evenly across every grain and helps the rice cool rapidly, yielding a glossy, well-aerated texture where each grain remains distinct and perfectly seasoned.

Questions from the pass

Frequently asked questions

Why is soaking sushi rice before cooking so critical?

Soaking sushi rice ensures that moisture penetrates to the core of each grain before cooking. This results in uniform heat distribution and starch gelatinisation. Without a proper soak, the rice is highly likely to cook unevenly, leaving you with unpleasant, hard-centred grains that ruin the texture of the sushi.

What is the purpose of washing sushi rice multiple times?

Washing sushi rice removes excess surface starch from the grains. If this starch is not rinsed away, it creates a gummy, overly sticky texture during the steaming process. Gentle washing ensures the final shari has the perfect balance of cohesion while allowing individual grains to remain distinct.

Why must the sushi vinegar be mixed into the rice while it is hot?

Mixing the seasoned vinegar into the rice while it is hot allows the grains to absorb the liquid rapidly and deeply. As the hot rice cools, it draws in the acidic seasoning, locking in the flavour and helping to create the signature glossy sheen that characterises professionally prepared sushi rice.

How should you mix the sushi vinegar into the rice without ruining the texture?

You must use a gentle cutting and folding motion with a spatula or paddle rather than stirring the mixture. Stirring or mashing the rice will crush the grains, releasing starches and turning the rice into a mushy paste. Folding aerates the rice, cools it quickly, and keeps the grains whole.

Main ingredients

Original video by Chef Yama. This overview is written independently by The Chef's Circle editorial desk — watch the original on YouTube.

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