Perfectly shaped rice balls with savory fillings wrapped in crisp nori
Japanese Onigiri
Prep Time
15 min
Cook Time
20 min
Total Time
35 min
Servings
6
6 onigiri
Difficulty
Easy
Cost
Budget
$
Japanese Onigiri
Perfectly shaped rice balls with savory fillings wrapped in crisp nori
★4.7(12)
Hand-formed Japanese rice balls filled with umami-rich fillings like salted salmon, pickled plum, and tuna mayo, wrapped in crisp nori seaweed. The perfect portable meal.
15m
Prep Time
20m
Cook Time
35m
Total Time
6
Servings
Easy
Difficulty
Budget $
Cost
Sarah Chen
(Updated )
Onigiri are Japan's most beloved grab-and-go food. Found in every convenience store, bento box, and family kitchen, these simple rice balls are comfort food at its most elemental — perfectly seasoned rice, a savory filling, and a sheet of crisp nori.
The beauty of onigiri lies in its simplicity. You need only freshly cooked Japanese short-grain rice, salt, and your filling of choice. The rice is shaped by hand — pressed firmly enough to hold together but gently enough to remain tender, not compressed.
They are the ideal meal prep food, lunchbox staple, and late-night snack. Once you learn the technique, you will find yourself making them constantly.
Ingredients
- 2 cups Japanese short-grain rice
- 2.25 cups water
- 1 tsp salt (for hands)
- 3 sheets nori, halved
- Filling option 1: 1/2 cup cooked salted salmon, flaked
- Filling option 2: 3 umeboshi (pickled plums), pitted
- Filling option 3: 1/4 cup canned tuna mixed with 1 tbsp Kewpie mayo
- Sesame seeds (optional)
Instructions
- 1
Wash rice in several changes of water until the water runs clear. Cook with 2.25 cups water in a rice cooker or covered pot (bring to boil, reduce to low, cook 15 minutes, rest 10 minutes).
- 2
While rice is warm, prepare your fillings. Flake cooked salmon, pit umeboshi, and mix tuna with mayo.
- 3
Wet your hands with water and rub with a pinch of salt. Take about 1/2 cup of warm rice and flatten in your palm.
- 4
Place a tablespoon of filling in the center. Mold the rice around the filling, pressing gently but firmly into a triangle shape (or ball).
- 5
Press and rotate, forming the classic triangular shape with flat sides and rounded edges. The onigiri should be compact but not crushed.
- 6
Wrap a half-sheet of nori around the base of each onigiri. The nori will soften slightly from the rice moisture.
- 7
Optionally sprinkle with sesame seeds. Serve immediately or wrap in plastic wrap for later.
Serving Suggestions
Ways to Serve This Dish
Serve over steamed jasmine or sticky rice
Pair with a side of pickled vegetables or kimchi
Add a drizzle of sesame oil and toasted sesame seeds for extra flavor
Arrange on a platter for easy sharing at your next gathering
Substitutions
UmeboshiAny salty, tangy pickle or kimchi
Different flavor but provides a similar contrast to the mild rice
NoriShiso leaf or thin omelet strip
Both are traditional alternatives for wrapping onigiri
Kewpie mayoRegular mayo plus a dash of rice vinegar
Kewpie is richer and tangier; this approximation is close
Tips & Storage
Pro Tips
The rice must be Japanese short-grain (like Koshihikari). Long-grain rice will not hold together.
Shape onigiri while the rice is still warm — cold rice is harder to mold and does not stick as well.
Wet your hands with salted water between each onigiri to prevent sticking.
For crispy nori, wrap just before eating. For soft nori, wrap ahead of time.
Storage
Wrap individually in plastic wrap and store at room temperature for up to 6 hours, or refrigerate for up to 1 day. Do not freeze — the rice texture suffers.
Reheating
Remove plastic wrap and microwave for 30-45 seconds to warm through. Refrigerated onigiri benefit greatly from a brief reheat. Alternatively, grill (yaki onigiri) by brushing with soy sauce and grilling until crispy.
Nutrition Facts
Per serving (1 onigiri) · 6 servings
Calories220
LowModerateHigh
A moderate-calorie serving · based on a 2,000 cal daily diet
Protein8g
Carbohydrates40g
Fat2g
Fiber1g
Sugar0g
Sodium380mg
Nutritional values are approximate and may vary based on specific ingredients and preparation methods.
Frequently Asked Questions
- What rice do I need?
- Japanese short-grain rice (like Koshihikari or Calrose). The sticky nature of short-grain rice is essential for holding the shape.
- What are the most popular fillings?
- In Japan, the most popular are salmon (sake), pickled plum (umeboshi), tuna mayo, seasoned cod roe (mentaiko), and kelp (kombu).
- Can I make onigiri ahead?
- Yes — wrap in plastic wrap. They keep at room temperature for several hours. Refrigerated, they last a day but the rice firms up. A quick microwave fixes the texture.
About Sarah Chen
Sarah Chen is a professional recipe developer and food editor with over a decade of experience in test kitchens and food media. She trained at the Culinary Institute of America before spending six years developing and testing recipes for national food publications, where she honed her ability to translate restaurant techniques into approachable home cooking. At RecipePool, Sarah leads recipe development, ensuring every dish is tested at least three times for clarity, accuracy, and genuine deliciousness. When she is not in the kitchen, she is browsing farmers markets and collecting vintage cookbooks.
View all recipes →