Fermented Seven Spice Mango Onigiri Recipe

Olivia Roszkowski
Ten Fermented Seven Spice Mango Onigiri rice balls sit on a blue plate

Japanese seven spice, also referred to as shichimi togarashi, most commonly contains a blend of red pepper, Sichuan pepper, ginger, white and black sesame seeds, orange peel and nori flakes. It contributes a multi-dimensional savory flavor alongside a gentle heat, and is commonly used to adorn ramen, udon noodles, tempura and edamame.

Since mango, chile and lime are such a well-established combination, the idea to lacto-ferment mango pieces with a citrus, chile-based spice blend came to fruition when developing this ferment. The next step was to utilize it to fill the interior of a popular Japanese rice dish, onigiri.

Onigiri is a triangular or cylindrical piece of white rice and is commonly filled with fish or umeboshi (fermented plum) paste. The fermented mango contributes sweet, salty and sea notes, culminating in a flavor-filled bite.

What’s Good to Know with Chef Olivia:

  • Using the fermented mango brine to season the sushi rice is not only resourceful but also imparts a great deal of flavor.
  • This ferment would taste delicious mixed with some mayo and used as a dipping sauce for French fries.
  • Serve your batch of fermented mango over coconut sticky rice for a savory version of the beloved dessert favorite.
  • When preparing your ferment, try to source mangoes that are not rock hard but also not too ripe. This will help them keep their shape when fermented.
  • Try adding your mango ferment to burritos, breakfast tacos or spicy tempura sushi rolls.
Recipe

Fermented Seven Spice Mango Onigiri Recipe

Ten Fermented Seven Spice Mango Onigiri rice balls sit on a blue plate

For the Fermented Seven Spice Mango Spears:
Yield: 1/2 gallon-sized jar

  • 3 large mangoes, peeled and cut into 1/4-inch thick spears
  • 1 ginger root, peeled and diced
  • 1 bunch scallions, sliced on diagonal
  • 2 tablespoons shichimi togarashi (Japanese seven spice)
  • 2 tablespoons sea salt
  • 2 tablespoons sugar
  • 1/4 cup rice vinegar
  • water, to cover

For the Fermented Seven Spice Mango Onigiri & Assembly: 
Yield: 16 pieces

  • 2 cups white sushi rice
  • 1/4 cup fermented mango brine
  • 1 teaspoon sea salt, more to taste
  • 1 1/2 cups fermented seven spice mango spears
  • 1/4 cup furikake
  • 1/4 cup black sesame seeds
  • 1/4 cup white sesame seeds

For the Fermented Seven Spice Mango Spears:

  1. Add mango spears, diced ginger, sliced scallions, shichimi togarashi, salt and sugar to a large bowl.
  2. Massage for 2 minutes. Fold in rice vinegar and allow mixture to rest for 5 minutes.
  3. Pack mixture into a sterilized, glass 1/2-gallon jar, along with any residual liquid; add fermentation weight.
  4. Cover with water until the level comes up 1 inch below the lower rim.
  5. Attach airlock lid and ferment at room temperature for 5 to 7 days.
  6. Refrigerate for extended storage.

For the Fermented Seven Spice Mango Onigiri & Assembly:

  1. Rinse sushi rice until water runs clear.
  2. Add to a pot and cover with cold water until level reaches 1 inch above the rice.
  3. Bring to a simmer, cover and cook on low for 15 minutes. Steam for 10 additional minutes.
  4. Fluff rice with a fork and transfer to a wide bowl.
  5. Gently fold in fermented mango brine and sea salt.
  6. Lightly wet hands by dipping in a bowl of water.
  7. Flatten 1/4 cup of rice into palm of hand. Add in a heaping tablespoon of fermented seven spice mango into center of rice.
  8. Fold rice over the mango to enclose the mango and form a ball. Shape into a triangle and repeat process with remaining rice and mango.
  9. Dip one side of each onigiri in either furikake, black or white sesame seeds.

More fermented recipes from Chef Olivia:

Chef Olivia Roszkowski

Chef Olivia Roszkowski (@oliviathechef) is a native New Yorker who holds a B.A. in Neuroscience & Behavior from Columbia University and an M.A. in Food Studies from NYU. An alum of the Natural Gourmet Institute, Chef Olivia has 14 years of professional kitchen experience. She has been teaching Plant-Based Culinary Arts at ICE since 2013.