Recipe: Salmon and Black Sesame Onigiri (Japanese Rice Balls) (2024)

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Anjali Prasertong

Anjali Prasertong

Anjali Prasertong is a writer and public health dietitian focused on food systems, racial equity, and nutrition. Originally from Los Angeles, she has taught English in rural Japan, worked as a private chef in Malibu, and led an innovative city-funded corner store program in New Orleans that increased fresh food access in low-income neighborhoods. She was previously a contributing editor for The Kitchn, and currently lives in Denver with her husband and two kids.

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updated May 24, 2019

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Recipe: Salmon and Black Sesame Onigiri (Japanese Rice Balls) (1)

Serves2Makes4 rice balls

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Recipe: Salmon and Black Sesame Onigiri (Japanese Rice Balls) (2)

The first meals alone in a foreign country are always intimidating. When I moved to a small city in central Japan to teach English for two years, onigiri was the first food I clung to. Like a life raft, these seaweed-wrapped rice balls — sort of the sandwiches of Japanese cuisine — kept me afloat in a sea of unfamiliar foods labeled in a language I could just barely read.

Made with short-grain rice, toasted nori, and a small amount of flavorful seafood, meat, or pickles, onigiri combine some of the elements of sushi, but in a more homey, comforting form. These are not the elegant creations of highly trained chefs, but the familiar, filling foods of school lunches and train trips, providing a little taste of home while on the road.

My love of onigiri never flagged during my time in Japan, but it was especially intense during those first few weeks, especially because every rice ball I bit into was essentially a surprise. Most onigiri I saw looked identical — triangular balls of rice wrapped in seaweed — except for a big sticker that announced its hidden filling. I could read about 20 percent of the labels, since they were written in the syllabaries I knew, but even words I could sound out were mysteries. Biting into the two rice balls I bought for lunch every day was an adventure. Would it be a bit of gingery chicken? Some bright orange salted fish roe? Or a salty-tart umeboshi (pickled plum)?

Salted salmon was always one of my favorite fillings. If you are lucky enough to live near a Japanese market, you may be able to find shiozake (salted salmon) for sale, but this recipe takes advantage of a more readily available cured fish that is just as flavorful: smoked salmon. Of course, this recipe is just a jumping off point when it comes to making rice balls. Basically anything intensely flavored and cut small enough to be wrapped up in rice is fair game: tuna salad, chopped pickles, curried chicken salad, smoked trout, marinated tofu, olives … the sky’s the limit.

In Japan you’ll find onigiri in supermarkets and convenience stores wrapped in an ingenious way that keeps the seaweed separate from the rice until you open it, so it stays dry and crisp. Without this special packaging technology, the nori of homemade rice balls becomes soft and chewy within a few minutes of wrapping, but I rather like this more rustic texture. It’s like pudding skin — special because it reminds you that what you are eating is homemade.

Another reminder is the plain round shape. Experienced onigiri-makers can turn out the traditional triangular shape, but it’s easier and just as tasty to make a rounded cake instead. Packed into a lunch bag, they are filling, nourishing, and easy to eat on the go, whether you’re on the road headed out of town or packing for a picnic close to home.

More tips on forming onigiri: An easier way to make Japanese rice balls, step by step at Just Hungry

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Makes 4 rice balls

Serves 2

Nutritional Info

Ingredients

  • 4 ounces

    thinly sliced smoked salmon

  • 3 cups

    cooked short-grain rice, hot (See how)

  • 2 tablespoons

    toasted black sesame seeds

  • 1/4 teaspoon

    salt or less, if needed

  • 1 sheet

    toasted nori, cut in 4 strips

Instructions

  1. Heat a well-seasoned cast iron skillet or nonstick pan over medium-high heat. Lay the salmon slices in the pan and cook until opaque and lightly browned, 15 to 30 seconds per side. Flake fish with a fork and mix with the rice and sesame seeds. Taste the mixture and add salt if needed.

  2. Place a bowl of water nearby and use it moisten your hands frequently while forming the onigiri, so the rice doesn't stick to them. Place one quarter of the rice mixture (about 3/4 cup) in your hands and squeeze together firmly. Rotate and squeeze until it forms a circular cake that holds together securely. Wrap a strip of nori around the middle. Repeat with remaining rice mixture.

  3. Serve immediately or wrap in plastic wrap to eat later. Most people recommend not refrigerating onigiri because it ruins the texture of the rice, but I find a 30-second warming in the microwave revives a refrigerated onigiri just fine.

Recipe Notes

You can use white or brown short-grain rice to make onigiri. (Long-grain rice is not sticky enough.) I use short-grain brown rice, which is a little less sticky than white rice and forms a looser ball.

You can use leftover cooked salmon in place of the cooked smoked salmon.

Instead of mixing the salmon into the rice, you can stuff it in the middle of the rice ball: loosely form a ball of rice, press a hollow in the middle, stuff the filling into the hollow, and squeeze the rice to form the onigiri.

Filed in:

Gluten-Free

Healthy Living

Ingredient

japanese

Lunch

Main Dish

Recipe: Salmon and Black Sesame Onigiri (Japanese Rice Balls) (2024)

FAQs

What's the difference between rice balls and onigiri? ›

There is no particular difference between the two, but there are various explanations as to why people call them “onigiri” or “omusubi.”

Is onigiri healthy or unhealthy? ›

Onigiri is a traditional Japanese rice ball that offers several nutritional benefits. It is a good source of protein, vitamins, and carbohydrates . Onigiri can be prepared with various ingredients such as salmon or cod roe, which provide additional nutrients .

Should you make onigiri the night before? ›

Should you choose to make your onigiri the night before serving, cover them with plastic wrap or keep in a tightly sealed container in the refrigerator. Even stored this way, your onigiri will taste best within 24 hours, as the rice will begin to dry out.

How do you keep onigiri from getting soggy? ›

The more economical way is to hack it with what you already have at home — in this case, regular plastic wrap. Apart from keeping the nori crispy and the rice moist, the wrapper also helps hold the rice in shape. Structure is integral for onigiri, and that begins with preparing the rice itself.

What are good fillings for onigiri? ›

There are many different fillings and toppings used for onigiri, but the most popular types are umeboshi (Japanese pickled plums), kombu (kelp), salmon flakes, okaka (flavored bonito flakes), and tuna mayonnaise. The beauty of onigiri is its portability factor.

How long will onigiri last in the fridge? ›

How long do onigiri last in the refrigerator? How do you keep them safe to eat? This mainly depends on the filling as well as how much salt you use on the surface when you make the onigiri. If you use tuna with mayonnaise or any filling with mayonnaise in it, do not keep more than a day to be safe.

Is it bad to eat onigiri everyday? ›

Eating only onigiri leads to too many rice (carbohydrate) and too few protein, vitamin, dietary fibers, etc. It's clearly not health diet. Japanese people before ww2 was taking that kind of diet, and died quite early.

Why do Japanese people eat onigiri? ›

Because it is easily portable and eaten by hand, onigiri has been used as portable food or bento from ancient times to the present day. Originally, it was used as a way to use and store left-over rice, but it later became a regular meal.

Can you eat onigiri without filling? ›

Yaki onigiri are best served hot, though they can be chewy yet tasty bento additions. Yaki onigiri usually do not have fillings, though some people like to put a little umeboshi or okaka inside (see the Filling section below).

Is onigiri better hot or cold? ›

It all depends on the size of the onigiri. Cold onigiri is softer and does not have that appetizing crunch. But, if you have tuna inside, the taste of the onigiri is more powerful when it is cold. However, meat eaters usually prefer to eat hot onigiri, because the fat of the pork and beef spreads into the rice.

Why is my onigiri falling apart? ›

If the fillings are too oily or watery, it will cause the rice to lose it's "stickiness" and result the rice ball not be able to hold its shape.

Should onigiri rice be cold or hot? ›

Use freshly cooked rice.

Let cool slightly. The rice should be warm when making onigiri.

Do you use sushi vinegar for onigiri? ›

Onigiri, or Omusubi as they are known in eastern Japan, are a great way to use your perfectly cooked Japanese steamed rice. Unlike sushi, we never use vinegar flavouring in the recipe but instead stir some salt into the rice and sprinkle a little salt on the outside.

Should you refrigerate onigiri? ›

Don't make onigiri with room-temperature rice..it will not stick together well and will dry out fast. The cooked rice should be nicely moist and plump to start with. Wrap them completely in plastic wrap before storing in the refrigerator. This keeps the moisture in and prevents the surface from drying out.

What rice is best for onigiri? ›

For onigiri that holds its shape well, it's important to use short-grain Japonica rice, such as “sushi” rice, a category that includes Calrose and Koshihikari rice and, as Sho notes, simply refers to varieties of rice preferred in Japan.

Why are onigiri called rice balls? ›

onigiri, popular Japanese snack consisting of a ball or cone of rice, often with a filling and wrapped in nori (seaweed). Onigiri takes its name from the Japanese word nigiru, meaning “to grasp” or “to squeeze,” so called because it is pressed by hand into a ball.

Why is Zoro's move called onigiri? ›

The pun in the name is that onigiri is also the name of a Japanese rice snack, while an oni is a type of ogre/demon in Japanese folklore. This was first seen used to finish Cabaji and the first technique he used against Dracule Mihawk.

Does onigiri just taste like rice? ›

Unlike sushi, which gets a large portion of its flavor from added vinegar, the rice in onigiri is just plain rice. The added flavor comes from salt, which you add during the shaping process, and from whatever filling you choose to use.

What is a rice ball called in Japanese? ›

Onigiri (おにぎり) are Japanese rice balls made of steamed rice that you compress into a triangular, ball, or cylinder shape and are usually wrapped in a nori seaweed sheet.

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