The Japanese eat short-grain white rice, specifically a type called japonica. It’s stickier, plumper, and more moist than the long-grain varieties common in Southeast Asia or the basmati popular in Indian cuisine. This stickiness is the whole point: it lets you pick up a clump neatly with chopsticks, shape it into sushi, or wrap it in nori for onigiri. Rice is so central to Japanese meals that the word for cooked rice, “gohan,” is also the word for “meal.”
The Most Popular Cultivars
Not all Japanese rice is the same. Dozens of named cultivars are grown across different regions, each with slightly different flavor, texture, and sweetness. One variety dominates the market: Koshihikari accounts for about 33% of all rice cultivation in Japan, grown primarily in Niigata, Ibaraki, and Tochigi prefectures. Niigata Koshihikari in particular is considered a premium product, prized for its glossy appearance, sweetness, and balanced stickiness.
After Koshihikari, the next most popular cultivars are:
- Hitomebore (about 8.5% of cultivation), grown mainly in Miyagi, Iwate, and Fukushima. It has a mild, clean flavor and slightly less stickiness than Koshihikari.
- Hinohikari (about 8.1%), a southern variety from Kumamoto, Oita, and Kagoshima. It’s a bit firmer, making it popular for everyday meals.
- Akitakomachi (about 6.7%), from Akita prefecture. It’s known for being slightly drier when cooled, which makes it a solid choice for bento boxes.
- Nanatsuboshi (about 3.2%), a Hokkaido variety that’s gained a strong reputation in recent years for its balanced sweetness and firm texture.
Japan even has a formal rice-tasting system run by the Japan Grain Inspection Association. Each year, professional panels compare rice from specific regions against a blended Koshihikari standard. Varieties that taste significantly better earn a “Special A” ranking, which drives consumer demand and regional pride. If you see “Special A” on a bag of Japanese rice, it means that specific cultivar from that specific region scored at the top in blind taste tests.
Everyday White Rice vs. Glutinous Rice
Japanese cuisine uses two broad categories of rice. The everyday table rice, called uruchimai, is what fills rice bowls at nearly every meal. It’s sticky enough to hold together but still has distinct, slightly firm grains. This is what you cook in a rice cooker and eat alongside miso soup, grilled fish, or curry.
The other category is mochigome, a glutinous (sweet) rice that’s much stickier and chewier. Despite the name, it contains no gluten. Mochigome is used for pounding into mochi (the soft, stretchy rice cakes), for making traditional sweets like daifuku, for sekihan (red bean rice served at celebrations), and for crackers like senbei and arare. You wouldn’t use mochigome as your dinner rice. It serves a completely different role in Japanese cooking.
How Sushi Rice Differs
Sushi rice starts as the same short-grain white rice used for everyday meals, but it’s seasoned after cooking. The classic preparation mixes rice wine vinegar, white sugar, and salt into freshly cooked rice while fanning it to cool it quickly. This gives sushi rice its characteristic glossy look, slightly tangy flavor, and firmer texture compared to plain steamed rice. The vinegar seasoning also originally served a preservation purpose, helping keep the rice safe to eat at room temperature. In sushi restaurants, this seasoned rice is called shari, and experienced chefs consider it just as important as the fish.
Brown Rice and Healthier Alternatives
While polished white rice dominates Japanese tables, health-conscious eaters have several alternatives that are gaining popularity.
Brown rice (genmai) is the whole grain with only the inedible outer hull removed, leaving the bran layer and germ intact. It has more fiber, vitamins, and minerals than white rice, but it requires longer soaking and cooking time, and the tougher, less sticky texture can be an adjustment. Some people find it harder to eat, especially with chopsticks, since it doesn’t clump the way polished rice does.
Germ rice (haigamai) splits the difference. A special milling process removes the bran but keeps the nutrient-rich germ at the base of each grain. The result is a beige-colored rice that’s slightly nutty and chewier than white rice but much easier to cook and eat than full brown rice. It’s a practical middle ground for people who want more nutrition without giving up the familiar texture.
Germinated brown rice (hatsuga-genmai) takes things a step further. Brown rice is soaked in water until tiny sprouts begin to emerge from the grains, a process that softens the texture and increases nutritional value. It’s notably high in an amino acid called GABA, along with antioxidants that support cell health and cholesterol management. The sprouting makes it softer and nuttier than regular brown rice.
Multi-grain rice mixes (zakkoku) are another common option. These aren’t a rice variety but a blend of grains, seeds, and beans that you cook together with white rice. A typical mix might include barley, millet, quinoa, azuki beans, black soybeans, mung beans, and black rice. They add color, texture, and a significant boost in fiber and nutrients without requiring you to switch entirely away from white rice.
Pre-Washed Rice
Traditional Japanese rice preparation involves washing the grains several times to remove surface starch before cooking. Skip this step and you end up with gummy, overly starchy rice. But pre-washed rice (musenmai) has become increasingly popular. Production of certified pre-washed rice in Japan rose from 120,000 metric tons in 1999 to about 430,000 metric tons by 2017, even as overall rice consumption in the country declined during that period.
The appeal is practical: it saves time, saves water, and produces less wastewater (the starchy rinse water from traditional washing can be an environmental concern at scale). Pre-washed rice also retains more water-soluble vitamins and minerals that would otherwise wash away, and it produces more consistent flavor since there’s no variation in how thoroughly different cooks rinse their rice. It’s especially useful in disaster preparedness, when clean water is scarce.
How Japanese Rice Is Cooked
The standard method is a rice cooker, which is found in virtually every Japanese household. The key details that make Japanese rice turn out right are simple but non-negotiable. The water-to-rice ratio is 1 to 1.1 (or 1.2) by volume, slightly more water than rice. This is noticeably less water than you’d use for long-grain varieties, which typically call for a 1 to 1.5 or even 1 to 2 ratio.
Short-grain rice also requires soaking for at least 20 to 30 minutes before cooking. This lets the grains absorb water evenly so they cook through to the center without getting mushy on the outside. Skipping the soak is the most common mistake people make when preparing Japanese rice at home for the first time. If you’re using brown rice, the soak time increases significantly, sometimes to several hours.
Storing Rice for Freshness
Once polished, Japanese rice loses quality relatively quickly compared to unprocessed grains. Heat and humidity are the main enemies. The ideal storage conditions are temperatures below 20°C (68°F) with relative humidity under 75%. Many Japanese households store rice in sealed containers in a cool, dark place, and some even keep it in the refrigerator during hot summer months. Buying in smaller quantities and using it within a few weeks of opening is the most reliable way to keep the flavor and texture at their best.