4-5 boneless chicken thighs, each cut into three pieces
¼ cup soy sauce
2 tbsp mirin
2 tbsp sake
2 cloves of garlic, minced
½ inch piece of ginger, grated or minced (about 1 tsp)
1 to 1 ½ cups potato starch
1 ½ to 2 cups of Japanese rice
¼ cup green onion, chopped (for garnish)
Salt and pepper
Vegetable Oil
Mayonnaise Dip:
1 cup mayonnaise
2 tbsp rice vinegar
1 tsp dijon mustard
1 tsp sugar
¼ tsp hondashi granules
Prepare the rice according to the directions on the package.
Cut the boneless chicken thighs into roughly 4 pieces each (3 pieces if the thighs are smaller).
Whisk the soy sauce, mirin, sake, garlic, and ginger together well in a bowl. Add the chicken pieces to the bowl and toss to coat with the marinade. Allow the chicken to marinate for anywhere between 1 to 4 hours.
While the chicken marinates, you can make the dipping sauce. Combine the mayonnaise, rice vinegar, mustard, sugar, and hondashi in a bowl and whisk well to fully combine.
When the chicken is finished marinating, add the potato starch to a bowl, along with a little salt and pepper. Stir the seasoning in and break up any clumps of potato starch. Shake off any excess marinade from each piece of chicken and dredge them in the potato starch. Gently, but thoroughly, shake off any excess potato starch from each piece of chicken.
Heat vegetable oil in an appropriate medium to large sized pot. Add enough oil for the chicken to cook fully submerged. You want to heat the oil to around 325°F. We are going to fry each piece of chicken two times. The double try helps to ensure a crispy breading. For the first fry, cook the chicken in batches without overcrowding the pot. Cool for about 3-4 minutes, or until the chicken breading turns a lightly golden color. Remove it from the oil to drain on a wire rack. Repeat the process with all off the chicken.
Now increase the heat to 350°F, and cook each piece of chicken again for an additional 2-3 minutes each or until done (internal temperature of 165 °F). Allow the chicken to drain on a wire rack once again.
To serve, add a portion of rice to a bowl, place three pieces of chicken on top of the rice, and garnish with green onion. Serve a portion of the mayonnaise dipping sauce in a small dish along with the chicken.