Rice balls that could be stored for 100 days at room temperature released in Japan

Onigiri, or rice balls, are one of the popularly enjoyed snacks in Japan. With a wide selection of flavors, they’ll make for a meal on their own–even if the approach to open one sometimes looks as if determining a puzzle to the uninitiated.

Now Japan’s Ishii Foods and popular Kyoto restaurant Hyakushokuya (known for serving only 100 meals a day) are teaming as much as hopefully make onigiri more of a life saver, with the discharge of rice balls that may safely be stored at room temperature for 100 days.

The collaboration lineup of rice balls is named Ishii no Bai Nigiri. The discharge ties into Ishii Foods past work in developing long-lasting food intended to supply sustenance during emergencies resembling a natural disaster or situation where access to other food, cooking, or electricity is cut off. The Ishii no Bai Nigiri rice balls are also filled with 10g of protein, which Ishii says is to supply strength in times of emergency.

The lineup consists of three rice balls that could be stored at room temperature for 100 days without spoiling. They could be cooked in a microwave or by boiling in hot water, and if heated in hot water without opening the seal, they could be eaten as much as 48 hours later.

The flavors included are a rice ball inspired by a preferred steak rice bowl served at Hyakushokuya, a fried rice flavor that uses no eggs or wheat, and a chicken curry flavor.

Steak Rice Bowl Rice Ball

Fried Rice Rice Ball


Curry Rice Ball


The rice balls are sold at two stores: Community House Viridian and the ISHII SHOKUHIN365 Shinjuku Takashimaya Store. Pre-orders are actually available on the Ishii online store.

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