20+ Onigiri filling ideas, flavours: From classic to creative

Onigiri fillings are the heart of Japan’s most beloved comfort food, simple rice balls that carry deep cultural meaning and endless flavor possibilities. At Kiichin, we love sharing how everyday Japanese foods connect tradition, creativity, and modern lifestyles. From convenience store staples to regional specialties and modern twists, onigiri fillings reflect how Japanese cuisine balances simplicity with care. 

1. Most popular onigiri fillings ideas for beginners

Classic onigiri fillings are where most people begin their journey with Japanese rice balls. These flavors are familiar, balanced, and easy to prepare, making them perfect for first-time home cooks. Below are beginner-friendly fillings that highlight Japanese traditional food culture through simple ingredients and time-tested flavors.

1. Tuna Mayo (ツナマヨ)
2. Pickled Plum (梅干し)
3. Salmon (鮭)
4. Seaweed
5. Chicken Teriyaki

1.1 Tuna mayo (ツナマヨ)

Tuna mayo is one of the most popular onigiri fillings in modern Japan, especially among younger generations. The creamy mayonnaise softens the savory tuna, creating a rich yet mild flavor that pairs perfectly with warm rice. It feels comforting and familiar, similar to Western tuna salad but lighter. This filling is easy to prepare and very forgiving for beginners.

Main ingredient: 

• Canned tuna
• Japanese mayonnaise
• A pinch of salt
• Ground black pepper

1.2 Pickled plum (梅干し)

Pickled plum, or umeboshi, is one of the oldest and most traditional onigiri fillings. Its sharp sourness cuts through the neutral rice, creating a refreshing contrast. This filling is also valued for its natural preservative qualities and its role in Japanese fermented foods culture. It is a true taste of classic Japanese food heritage.

Main ingredients:

• Pickled plum (umeboshi)
• Plum paste (optional, for smoother texture)
• Shiso leaves (optional)

1.3 Salmon (鮭)

Salted salmon is a timeless onigiri filling enjoyed across generations. The savory, slightly oily salmon balances beautifully with plain rice. It works well both hot and cold, making it ideal for packed lunches. This filling highlights simplicity and quality ingredients.

Main ingredients:

• Salted grilled salmon
• Sea salt
• Sesame seeds (optional)

1.4 Seaweed

Seaweed-based fillings often use simmered kombu for a mildly sweet and umami-rich flavor. It is gentle, earthy, and deeply Japanese in character. This filling is popular with those who enjoy subtle tastes. It pairs well with sesame or soy sauce accents.

Main ingredients:

• Simmered kombu seaweed
• Soy sauce
• Sugar or mirin
• Sesame seeds

1.5 Chicken teriyaki

Chicken teriyaki adds a slightly sweet and savory profile to onigiri. The glossy sauce soaks lightly into the rice, enhancing every bite. It feels hearty and satisfying without being heavy. This filling is especially popular for lunch meals.

Main ingredients:

• Teriyaki chicken
• Soy sauce
• Mirin
• Sugar

2. Best creative and unique onigiri filling ideas

Once you are comfortable with classic onigiri fillings, exploring creative options adds excitement to your meals. Modern onigiri flavours often blend Japanese techniques with global influences. These fillings are ideal for home cooks who want variety without losing authenticity.

1. Teriyaki beef with onions
2. Avocado and shrimp
3. Teriyaki mushroom
4. Curry chicken
5. Spicy salmon with cream cheese

2.1 Teriyaki beef with onions

Teriyaki beef with onions brings bold umami and sweetness into the onigiri format. The caramelized onions add depth and softness to the beef. This filling feels rich and satisfying, making it perfect for a main meal. It reflects modern Japanese comfort food trends.

Main ingredients:

• Teriyaki beef
• Sautéed onions
• Soy sauce
• Mirin or sugar

2.2 Avocado and shrimp

Avocado and shrimp create a creamy yet fresh onigiri filling. The mild sweetness of shrimp pairs well with buttery avocado. This combination feels light and modern, appealing to fusion food lovers. It is a refreshing alternative to traditional fillings.

Main ingredients:

• Cooked shrimp
• Ripe avocado
• Japanese mayonnaise (optional)
• Lemon juice or salt

2.3 Teriyaki mushroom

Teriyaki mushrooms offer deep umami without meat. The sauce enhances the natural earthiness of mushrooms. This filling feels hearty while remaining plant-based. It is ideal for vegetarian-friendly meals.

Main ingredients:

• Teriyaki-glazed mushrooms
• Soy sauce
• Mirin
• Sesame oil

2.4 Curry chicken

Curry chicken onigiri delivers warm spices and comfort in every bite. The gentle curry flavor blends smoothly with rice. It feels familiar yet exciting. This filling works well for colder days or hearty lunches.

Main ingredients:

• Japanese curry chicken
• Curry roux
• Onion or carrot (optional)
• Mild spices

2.5 Spicy salmon with cream cheese

Spicy salmon with cream cheese adds a modern twist inspired by sushi flavors. The spice provides heat while cream cheese adds smoothness. This filling feels indulgent but balanced and is especially popular among fans of bold flavors and best sushi types like spicy rolls.

Main ingredients:

• Fresh or cooked salmon
• Chili sauce or sriracha
• Cream cheese
• Soy sauce or sesame oil

3. Top regional and seasonal onigiri fillings flavours

Regional onigiri fillings reflect local ingredients and seasonal traditions across Japan. These flavors tell stories of climate, harvest, and cultural identity. Trying regional fillings allows you to experience Japan beyond standard recipes. 

1. Hokkaido’s butter and corn onigiri
2. Kyoto’s yuba (Tofu skin)
3. Sakura onigiri
4. Shiso and plum (ume)
5. Miso and pumpkin (kabocha)

3.1 Hokkaido’s butter and corn onigiri

This filling highlights Hokkaido’s famous dairy and corn. Butter melts into the rice, creating richness, while corn adds sweetness. The combination feels comforting and indulgent. It is especially popular in colder months.

Main ingredients:

• Butter
• Sweet corn
• Salt
• Black pepper (optional)

3.2 Kyoto’s yuba (tofu skin)

Yuba offers a delicate, refined flavor associated with Kyoto cuisine. Its soft texture and subtle taste emphasize simplicity. This filling reflects elegance and restraint. It pairs well with lightly seasoned rice.

Main ingredients:

• Yuba tofu skin
• Soy sauce
• Dashi (optional)
• Sesame oil

3.3 Sakura onigiri

Sakura onigiri celebrates spring with pickled cherry blossoms. The floral aroma and gentle saltiness create a seasonal experience. This filling is often enjoyed during hanami. It represents Japan’s appreciation of nature.

Main ingredients:

• Pickled sakura blossoms
• Salt
• Rice vinegar (optional)

3.4 Shiso and plum (ume)

Shiso leaves add herbal freshness to sour plum. Together, they create a bright and aromatic filling. This pairing is refreshing and traditional. It is popular during warmer seasons.

Main ingredients:

• Shiso leaves
• Pickled plum (umeboshi)
• Plum paste (optional)

3.5 Miso and pumpkin (kabocha)

Miso and kabocha combine sweetness and savory depth. The pumpkin provides creamy texture, while miso adds umami. This filling feels nourishing and comforting. It is ideal for autumn.

Main ingredients:

• Kabocha pumpkin
• Miso paste
• Sugar or mirin
• Sesame seeds

4. Amazing onigiri fillings vegetarian ideas for every palate

Vegetarian onigiri fillings show how plant-based ingredients shine in Japanese cuisine. These options focus on natural flavors, texture, and balance. They are satisfying without relying on meat or fish. 

1. Miso and tofu
2. Avocado and cucumber
3. Pickled plum
4. Shiso and sesame
5. Sweet potato and soy sauce

4.1 Miso and tofu

Miso and tofu create a gentle yet savory filling. The tofu absorbs miso flavor while staying light. This filling feels nourishing and simple. It reflects everyday home style Japanese cooking.

Main ingredients:

• Tofu
• Miso paste
• Soy sauce (optional)
• Sesame oil

4.2 Avocado and cucumber

Avocado and cucumber offer freshness and crunch. The creamy avocado balances the crisp cucumber. This filling feels light and refreshing. It suits warm-weather meals.

Main ingredients:

• Avocado
• Cucumber
• Salt
• Lemon juice (optional)

4.3 Pickled plum

Pickled plum remains a favorite vegetarian option. Its bold sourness keeps rice tasting fresh. This filling is low-calorie and traditional. It is also easy to prepare.

Main ingredients:

• Pickled plum (umeboshi)
• Plum paste (optional)
• Shiso leaves (optional)

4.4 Shiso and sesame

Shiso and sesame combine aroma and nuttiness. The herbs add freshness, while sesame brings depth. This filling feels light yet flavorful. It pairs well with white or mixed grain rice.

Main ingredients:

• Shiso leaves
• Sesame seeds
• Soy sauce
• Sesame oil (optional)

4.5 Sweet potato and soy sauce

Sweet potato with soy sauce creates a sweet savory balance. The soft texture makes it comforting and filling. This option feels hearty and satisfying. It is popular in autumn and winter.

Main ingredients:

• Sweet potato
• Soy sauce
• Sugar or mirin
• Butter (optional)

Onigiri fillings showcase how Japanese food transforms simple rice into endless possibilities through balance, seasonality, and creativity. From classic flavors to modern and vegetarian options, onigiri fits every lifestyle and taste. These fillings make Japanese culture accessible in everyday meals. Visit Kiichin today and start creating onigiri that reflect both tradition and your personal taste.

FAQs - Common questions about onigiri ideas