Assorted Japanese Onigiri with Multiple Fillings
Assorted Japanese Onigiri with Multiple Fillings is a medium Japanese recipe that serves 4. 250 calories per serving. Recipe by THE YELLOW RICE on YouTube.
Prep: 30 min | Cook: 20 min | Total: 1 hr
Cost: $7.85 total, $1.96 per serving
Ingredients
- 300 g Sushi rice (sushi‑mai) (Rinse until the water runs clear)
- 360 ml Water (For cooking the rice (ratio 1:1.2))
- 30 g Umeboshi (salted and pickled plum) (Pitted, cut into small dice)
- 150 g Canned tuna (in water) (Drained, flaked)
- 30 g Mayonnaise (2 tablespoons)
- 15 ml Soy sauce (1 tablespoon, preferably gluten‑free)
- 10 g Dried bonito flakes (katsuobushi) (Mixed with a drizzle of soy sauce)
- 5 g Dried wakame (Rehydrated in cold water for 5 min then chopped)
- 5 g Sesame seeds (Lightly toasted)
- 4 pcs Nori sheets (Cut into strips of 2 × 10 cm or 4‑10 cm strips depending on use)
- 2 c. à café Salt (for moistening hands) (About two pinches, to place on wet hands)
Instructions
Rinsing the rice
Place the rice in a colander and rinse under cold water, gently rubbing the grains between your hands until the water runs clear.
Time: PT5M
Cooking the rice
Put the rinsed rice and water in a saucepan. Bring to a boil, cover, reduce heat to low and simmer for 15 min without lifting the lid, then turn off the heat and let rest for 10 min.
Time: PT20M
Temperature: 100°C
Cooling the rice
Transfer the cooked rice to a large bowl, fluff it with a spatula using cutting motions, then let cool at room temperature for 10 min.
Time: PT10M
Preparing the fillings
a) Umeboshi: pit, cut into small dice. b) Tuna: drain, flake, mix with mayonnaise and ½ tablespoon soy sauce. c) Bonito: mix the flakes with the remaining soy sauce. d) Wakame: rehydrate in 30 ml cold water for 5 min, drain, chop, mix with a drizzle of soy sauce and toasted sesame seeds.
Time: PT10M
Preparing the workstation
Lightly moisten your hands with water, sprinkle with salt (about two pinches) to prevent the rice from sticking.
Time: PT2M
Shaping the onigiri (bowl + plastic wrap method)
a) Place a piece of plastic wrap over a bowl. b) Put 50 g of rice in the center, flatten slightly. c) Add 15‑20 g of filling in the center. d) Cover with an additional 50 g of rice. e) Seal the wrap and, using your hands, shape a triangle by pressing firmly. f) Unwrap the triangle and place a strip of nori halfway up on one side.
Time: PT10M
Finishing and serving
Repeat the process for each filling. Arrange the onigiri on a plate, eat immediately or cover with plastic wrap until serving.
Time: PT3M
Nutrition Facts
- Calories
- 250
- Protein
- 8 g
- Carbohydrates
- 45 g
- Fat
- 5 g
- Fiber
- 2 g
Dietary info: Contains fish, Contains soy, Contains sesame, Gluten‑free if using gluten‑free soy sauce, low-calorie, low-fat
Allergens: Fish (tuna, bonito), Soy (soy sauce, mayonnaise), Sesame
Ingredient Substitutions
- Instead of Sushi rice (sushi‑mai): Short grain rice
- Instead of Umeboshi (salted and pickled plum): Japanese pickles, Marinated green olives
- Instead of Canned tuna (in water): Canned salmon, Shredded cooked chicken
- Instead of Mayonnaise: Vegan mayonnaise
- Instead of Soy sauce: Tamari
- Instead of Dried bonito flakes (katsuobushi): Aonori (powdered seaweed)
- Instead of Dried wakame: Torn nori seaweed
- Instead of Sesame seeds: Black sesame seeds
- Instead of Nori sheets: Pre‑cut nori sheet strips
Equipment Needed
- Saucepan or rice cooker
- Fine colander
- Medium bowl
- Plastic wrap (food wrap)
- Silicone spatula (optional)
- Cutting board
- Chef's knife
- Small plate (optional)
- Triangular mold or bowl (optional) (optional)
Critical Steps — Do Not Skip
- Rinsing the rice until water is clear
- Cooking the rice with lid closed
- Shaping with plastic wrap to prevent the rice from sticking
Chef Tips from the Video
- Use slightly wet hands sprinkled with salt for effortless shaping.
- For a perfect triangle, shape the rice between two pieces of plastic wrap and gently press with your fingers.
- Toast the sesame seeds dry to intensify their aroma.
Troubleshooting
The rice sticks too much to the hands
Moisten hands more and add a small pinch of salt. Use plastic wrap to shape.
The rice is too dry and falls apart
Check the water‑to‑rice ratio (1:1.2). Add 1‑2 tablespoons of warm water to the still‑warm rice and mix gently.
The filling is too salty
Quickly rinse the umeboshi or reduce the amount of soy sauce in the mixtures.
The nori becomes soggy
Wrap the onigiri just before serving or place the nori on the outer side only.
Storage
Refrigerator: Store the onigiri wrapped in plastic wrap, in an airtight container, for up to 2 days.
Freezer: Not recommended; the rice loses its texture after thawing.
Room temperature: Consume within 4 hours if not refrigerated.
Make-Ahead Tips
- Cook the rice and let it cool completely, then store it in the refrigerator in an airtight container.
- Prepare all fillings ahead of time and keep them separate, refrigerated.
- Shape the onigiri just before serving; otherwise, wrap each triangle in plastic wrap to prevent drying out.
Last updated: August 20, 2026





