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Aji Amarillo & Shio Koji Chicken Breast Yakitori

Aji Amarillo & Shio Koji Chicken Breast Yakitori

Chicken breast gets a bad rap on the grill, but Japanese fermentation science completely changes the game. By curing lean protein with umami-rich shio koji and the sunny, fruity heat of Peruvian aji amarillo, we lock in moisture and flavor before hitting the high heat. This is Tokyo-meets-Lima street food for your backyard.

Kenji Nakamura
Kenji Nakamura
Prep: 45 minutes
Cook: 10 minutes
4
medium
dinnerappetizer
yakitorifusiongrillingfermentation+1

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Timeline

55 minutes
0m15m30m45m55m
Prep Marinade
5m
Marinate Chicken
30m
Simmer Tare Glaze
15m
Preheat Grill
15m
Skewer Chicken
10m
Grill Skewers
6m
Glaze and Char
Garnish and Serve

Ingredients

  • 1.5 lbs boneless skinless chicken breasts(Cut into uniform 1-inch cubes)
  • 3 tbsp shio koji(Liquid or paste works)
  • 3 tbsp aji amarillo paste(Divided (2 tbsp for marinade, 1 tbsp for tare))
  • 8 scallions(Cut into 1-inch pieces, white and light green parts only)
  • 1/4 cup soy sauce(For the tare)
  • 1/4 cup mirin(For the tare)
  • 1/4 cup sake(For the tare)
  • 1 tbsp brown sugar(For the tare)
  • 1 tbsp toasted sesame seeds(For garnish)
  • 4 shiso leaves(Chiffonade, for garnish)
  • 1 lime(Cut into wedges)

Instructions

  1. 1

    In a mixing bowl, toss the 1.5 lbs boneless skinless chicken breasts cubes with 3 tbsp shio koji and 2 tbsp aji amarillo paste. Massage it into the meat until fully coated. Set aside to marinate at room temperature.

    5 min

    Tip: Don't skip the massage. You want those enzymes making contact with every surface.

  2. 2

    Let the chicken marinate while you prepare the sauce and grill. The enzymes in the koji need this time to tenderize the breast meat.

    30 min

    Tip: Thirty minutes is the sweet spot. Less than that, and the proteins don't break down enough. More than an hour, and chicken breast gets unpleasantly mushy.

  3. 3

    To make the tare (glaze), combine the 1/4 cup soy sauce, 1/4 cup mirin, 1/4 cup sake, 1 tbsp brown sugar, and the remaining 1 tbsp aji amarillo paste in a small saucepan. Simmer over medium heat until it reduces by about a third and coats the back of a spoon.

    15 min

    Tip: Keep an eye on this. The sugar in the mirin and brown sugar can scorch quickly once it starts reducing.

  4. 4

    While the tare reduces and chicken marinates, fire up your grill to high heat. If using bamboo skewers, submerge them in water to soak so they don't incinerate over the coals.

    15 min

    Tip: I prefer binchotan charcoal for yakitori, but a scorching hot gas grill works if that's what you have in the backyard.

  5. 5

    Thread the marinated chicken cubes onto the soaked skewers, alternating with pieces of the 8 scallions. Pack them tightly; this protects the meat from drying out.

    10 min

    Tip: Try to keep the surface of the skewer relatively flat so it makes even contact with the grill grates.

  6. 6

    Place the skewers on the hottest part of the grill. Cook for 3 minutes until a nice char develops, then flip and cook for another 3 minutes. The chicken should be mostly cooked through at this point.

    6 min

    Tip: Shio koji contains sugars that will caramelize quickly, so keep them moving if flare-ups occur.

  7. 7

    Brush the reduced tare generously over the skewers. Grill for 30 seconds, flip, brush the other side, and grill for another 30 seconds. Repeat this one more time to build up a sticky, lacquered crust.

    2 min

    Tip: Do this at the very end. The sugars in the glaze will burn into bitter carbon if left on the heat too long.

  8. 8

    Transfer the skewers to a platter. Garnish with 1 tbsp toasted sesame seeds and the 4 shiso leaves. Serve immediately with wedges from the 1 lime.

    2 min

    Tip: Squeeze the lime right before eating. The acidity cuts through the sweet, umami-heavy glaze.

Chef's Notes

Let's geek out for a second on why this works. Most people avoid chicken breast for yakitori because it turns into dry sawdust over high heat. But shio koji is packed with protease enzymes. These act like molecular scissors, snipping the long, tight protein chains in the chicken breast into smaller amino acids (hello, free glutamates!). This not only prevents the proteins from squeezing out all their moisture on the grill, but it also translates to pure, unadulterated umami. Adding the aji amarillo directly to the cure means that fruity, sun-drenched heat penetrates all the way to the center of the meat, marrying Lima street cart vibes with Tokyo alleyway precision.

Frequently Asked Questions

How long does Aji Amarillo & Shio Koji Chicken Breast Yakitori take to make?

Aji Amarillo & Shio Koji Chicken Breast Yakitori takes about 55 minutes total. That includes 45 minutes of prep and 10 minutes of cooking.

How many servings does this recipe make?

This recipe makes 4 servings.

What skill level is needed for Aji Amarillo & Shio Koji Chicken Breast Yakitori?

This recipe is rated medium — it's intermediate, requiring some cooking experience.

What ingredients do I need for Aji Amarillo & Shio Koji Chicken Breast Yakitori?

The main ingredients are: boneless skinless chicken breasts, shio koji, aji amarillo paste, scallions, soy sauce, mirin, sake, brown sugar, toasted sesame seeds, shiso leaves, lime.

What type of meal is Aji Amarillo & Shio Koji Chicken Breast Yakitori?

Aji Amarillo & Shio Koji Chicken Breast Yakitori is categorized as: dinner, appetizer.