Achiote & Shio Koji-Cured King Oyster Mushroom Bowl with Genmaicha Rice

Instructions

1. 1

   Whisk together 2 tbsp achiote paste, 2.5 tbsp shio koji, 1.5 tbsp lime juice, 0.5 tsp Mexican oregano, and 0.25 tsp ground cumin in a shallow dish to form a fragrant curing paste. Rub the paste thoroughly over the scored faces and sides of 1 lb king oyster mushrooms, massaging into the crevices. Leave to cure at room temperature for 20 minutes.

   10 min

   Tip: Scoring deep diamond cuts increases surface area so the proteases in the shio koji and the tart citrus acids penetrate deep into the dense fungal fibers, softening chitin while developing an intense savory crust.

2. 2

   Steep 1.5 tbsp genmaicha tea leaves in 2.25 cups boiling water for 4 minutes, then strain out the leaves. Combine the infused tea with 1.5 cups jasmine rice and 0.5 tsp fine sea salt in a medium saucepan. Bring to a boil over medium-high heat, then cover with a tight-fitting lid, drop heat to lowest setting, and simmer undisturbed for 15 minutes before removing from heat to steam for 5 minutes.

   20 min

   Tip: Genmaicha infuses the grains with an earthy, toasted puffed rice aroma that bridges Japanese teahouse comfort with Latin American grain bowl foundations.

3. 3

   In a small non-reactive bowl, toss 1 small chayote squash and 3 radishes with 3 tbsp unseasoned rice vinegar, 1 tbsp mirin, remaining 1.5 tbsp lime juice, and 0.25 tsp fine sea salt. Set aside to quick-pickle at room temperature, tossing occasionally.

   6 min

   Tip: The bright acidity and crunch of the chayote cut right through the rich, savory char of the cured mushrooms.

4. 4

   Heat 1 tbsp avocado oil in a small skillet over high heat until shimmering. Add 4 scallions and sear without moving for 90 seconds until charred. Transfer to a heatproof bowl and stir in 1 tbsp toasted sesame oil, 1 toasted nori sheet, 1 tbsp toasted white sesame seeds, and remaining 0.25 tsp fine sea salt to create a smoky salsa macha.

   6 min

   Tip: Quickly searing the scallions brings out sweetness and subtle smokiness, mirroring the char on the mushrooms.

5. 5

   Gently wipe excess cure marinade off 1 lb king oyster mushrooms with a damp paper towel to prevent scorching. Heat remaining 2 tbsp avocado oil in a heavy cast-iron skillet over medium-high heat until wisps of smoke appear. Place the mushroom halves scored-side down and press with a chef's weight or spatula. Sear undisturbed for 4 minutes until a deep, mahogany crust forms, then flip and sear the back side for 3 minutes until tender and caramelized throughout.

   8 min

   Tip: Wiping off surface shio koji prevents the naturally occurring koji sugars from burning before the mushroom flesh has a chance to heat through and brown properly.

6. 6

   Fluff the warm genmaicha rice with a fork and gently fold in 0.5 cup fresh cilantro. Divide the rice evenly among shallow lunch bowls. Top each bowl with the seared achiote king oyster mushrooms, drained quick-pickled chayote and radishes, and generous spoonfuls of the charred scallion-nori salsa macha.

   4 min

   Tip: Slice the seared mushroom steaks on a gentle bias right before plating to reveal the glistening, scored texture and trapped juices.