Calculate precise infrared sear times, skewer rotation intervals, and Binchotan charcoal fuel requirements for Japanese Wagyu striploin skewers (Kushiyaki). Cooking over authentic Kishu Binchotan generates intense far-infrared radiation (800 deg F to 1000 deg F / 427 deg C to 538 deg C), caramelizing the exterior in seconds while keeping the core succulent and medium-rare.

Master Rule: Maintain skewer elevation 2.5 to 3.5 inches above glowing Binchotan coals. Binchotan burns virtually smokeless and flameless; when Wagyu fat drips, it vaporizes instantly on contact with white coals into aromatic flavor compounds without creating bitter black flare-ups.

Configure Parameters

20 mm
3.0 inches
6 Skewers

Calculated Targets

Sear Time Per Face (4 Faces)
32 sec / face
Total Cook: 128 sec (2.1 min) | 4-Side Rotation Strategy
Total Skewer Duration
2 min 8 sec
Meat Weight Per Skewer
50 g (4 Cubes)
Tare Dip / Glaze Window
Final 20 Seconds
Binchotan Fuel Needed
1.2 kg Coals
Soak flat bamboo teppo-gushi skewers in cold water for at least 60 minutes prior to skewering. The flat paddle profile prevents heavy Wagyu cubes from spinning during rapid rotations.

Yakitori Cube Dimensions vs Binchotan Sear Timing

Cube Size (mm) Binchotan Distance (in) Sear / Face (sec) Total Cook (sec) Internal Temp (deg F) Cubes / Skewer
15 mm 2.5 in 20 sec 80 sec 125 deg F 5 cubes (40g)
18 mm 3.0 in 26 sec 104 sec 126 deg F 4 cubes (45g)
20 mm 3.0 in 32 sec 128 sec 128 deg F 4 cubes (50g)
25 mm 3.5 in 45 sec 180 sec 130 deg F 3 cubes (60g)
30 mm 4.0 in 65 sec 260 sec 132 deg F 3 cubes (75g)

Precision Master Protocol

  1. 1
    Precision Butchery: Cut chilled Wagyu striploin into uniform cubes (20mm x 20mm x 20mm). Uniformity ensures every face maintains identical clearance over the charcoal bed.
  2. 2
    Flat Skewer Threading: Thread 4 cubes per soaked bamboo teppo skewer, leaving 1mm between cubes for heat circulation around each facet.
  3. 3
    Binchotan Bed Ignition: Light Binchotan coals in a charcoal chimney for 25 to 35 minutes until glowing white. Arrange coals in a narrow Yakitori konro grill in an even, 2-layer bed.
  4. 4
    Four-Face Searing: Place skewers directly across the grill rails at the calculated height. Rotate 90 degrees every 30 to 35 seconds, completing all 4 faces.
  5. 5
    Tare Glaze Application (Optional): If cooking Tare style, dip skewers into simmering sweet soy-mirin tare during the final 20 seconds of cooking, allowing sugars to caramelize over the infrared coals.
  6. 6
    Sansho Finish: Remove from heat, rest for 60 seconds, and dust lightly with freshly ground Japanese green sansho pepper and flake salt.
Build Your Custom Meat Box

Pasture-raised American Wagyu and heritage beef delivered ranch-direct to your door with zero antibiotics or added hormones.

Build Your Custom Box →