The most popular rice ball at Japanese convenience stores is “Tuna Mayo.” It is sold at various convenience stores, including “7-Eleven,” “Lawson,” and “FamilyMart.”
Popular “Tuna Mayo” Rice Ball at Japanese Convenience Stores(ツナマヨ)
“Tuna Mayo” is by far the most popular rice ball at Japanese convenience stores.
This rice ball is made by mixing tuna with mayonnaise, a familiar flavor even to people overseas. It’s a taste that would likely be well-received by international customers.
In Japan, the rice ball is priced at around 130 yen, which is approximately 0.9 dollars.
As for the taste, the seaweed has a crispy texture, and the rice has a slight saltiness that perfectly matches the “Tuna Mayo” filling, making it incredibly delicious.
The seaweed has a subtle flavor of soy sauce and sugar, making it delicious even when eaten on its own.
“Shrimp Mayo” is Also Recommended(海老マヨ)

While “Tuna Mayo” is the top favorite, there’s another similar product called “Shrimp Mayo.”
This rice ball contains boiled shrimp mixed with mayonnaise.
The shrimp has a firm, bouncy texture, making it another easy-to-enjoy option for international customers.
You’re unlikely to go wrong with this choice.
Although it’s a staple product, it’s not available at all stores, so if you find it, give it a try.
You’re sure to like it.
Shrimp Mayo is slightly more expensive than Tuna Mayo, costing around 167 yen, which is approximately 1.1 dollars.
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