Read more: 7 Must-Have Canned Foods And 7 To Avoid In Your Pantry Tuna mayo (it sounds like one word in Japan) has been a popular onigiri filling in Japan since 1983. So, going from tuna sandwich ...

This helps bring out the flavor and gives the rice that classic onigiri taste. Let the rice cool to room temperature so it's easier to handle. Prepare the tuna mayo filling: Drain the canned tuna ...

Now the cooked rice is ready. 1. Prepare the onigiri fillings. Tuna-mayo: Mix the tuna with mayonnaise and black pepper. Ume: Remove the seed from umeboshi. 2. Spread the cooked rice on plastic wrap.

So now today, I'm going to show you one of the most popular fillings of "onigiri," which is tuna and mayonnaise. Tuna mayo is simply a mixture of canned tuna and mayonnaise and perfectly Japanese ...