Quick Facts
| Venue | Muji Launches Four New Protein and Fiber-Rich Rice Balls in Tokyo from June 17 |
|---|---|
| Area | Not announced |
| City / Prefecture | Tokyo |
| Event / Menu Name | Not announced |
| Dates | from June 17 |
| Time | Not announced |
| Price | Not announced |
| Address | Not announced |
| Nearest Station | Not announced |
| Reservation | Not announced |
| Official Website | Not announced |
| Source | Not announced |
Muji, operated by Ryohin Keikaku Co., Ltd., is launching four new frozen rice balls designed to help customers easily add protein and dietary fiber to their daily meals. These convenient rice balls will be available starting June 17, 2026, at Muji stores that carry frozen foods as well as through their online store.
Travelers and visitors in Tokyo looking for quick, nutritious meals will appreciate these rice balls, which are perfect for on-the-go eating or a light snack. The products combine traditional Japanese flavors with health-conscious ingredients, making them suitable for those seeking balanced nutrition during their stay.
About the New Rice Balls

Muji has been offering frozen foods since 2018, with rice dishes like kimbap and rice balls being popular choices among customers. Building on this success, the company has developed four new rice ball varieties that specifically focus on providing protein and fiber, nutrients often lacking in daily diets. Each rice ball weighs about 80 grams, roughly half a bowl of rice, and comes individually wrapped for easy portion control. Customers can heat just one or two depending on their appetite.


Highlights
- Four types of frozen rice balls rich in protein or dietary fiber
- Made with mochi barley and soybeans for added nutrition
- Individual packaging allows flexible portion sizes
- Traditional Japanese ingredients like chicken soboro, egg, cheese, okaka, edamame, salted kelp, salmon, and wakame seaweed
- Available from June 17, 2026, at Muji frozen food stores and online




Menu and Product Details
| Item | Details |
|---|---|
| Name | Muji Protein and Fiber Rice Balls |
| Menu / items | Protein Rice Ball with Cheese and Okaka; Protein Rice Ball with Chicken Soboro and Egg; Fiber Rice Ball with Mochi Barley Rice, Edamame, and Salted Kelp; Fiber Rice Ball with Mochi Barley Rice, Salmon, and Wakame |
| Location | Muji frozen food stores and online store, Tokyo |
| Address | 1-6-1 Otsuka, Bunkyo-ku, Tokyo |
| Period | From June 17, 2026 |
| Release date | June 17, 2026 |
| Price | Not specified in the release |
The “Protein Rice Ball with Cheese and Okaka” contains 8.2 grams of protein per 80g serving and features mochi barley and soybeans combined with flavorful ingredients like soy sauce-seasoned okaka, cheese, white sesame, and dried bonito flakes.
The “Protein Rice Ball with Chicken Soboro and Egg” offers 5.9 grams of protein per 80g serving, blending sweet and savory chicken soboro seasoned with soy sauce, sugar, and ginger, along with egg and green beans for a colorful finish.
For fiber, the “Fiber Rice Ball with Mochi Barley Rice, Edamame, and Salted Kelp” delivers 5.4 grams of dietary fiber per 80g serving. This renewed version balances edamame, small fish (shirasu), and flaxseed with the umami of salted kelp.
The “Fiber Rice Ball with Mochi Barley Rice, Salmon, and Wakame” contains 4.97 grams of dietary fiber per 80g serving. It features black rice for color, salmon as the main ingredient, complemented by wakame seaweed and sesame seeds.
These rice balls offer a simple, nutritious option for those wanting to maintain a balanced diet while enjoying authentic Japanese flavors during their visit to Tokyo.