- 1.5 lb (680 g) boneless skin-on chicken thighs, trimmed and cut into 1–1.25 inch (2.5–3 cm) pieces - 3 tbsp (45 ml) soy sauce - 2 tbsp (30 ml) sake - 1 tbsp (15 ml) mirin (or 1 tbsp / 15 ml extra sake if unavailable) - 1 tsp (4 g) granulated sugar - 1 tbsp (15 g) grated fresh ginger (about 1.5 inches / 3.5 cm piece) - 2 cloves garlic, grated (about 6 g) - 1 tsp (5 ml) toasted sesame oil - 1 large egg (50 g) - 1/2 cup (60 g) potato starch (katakuriko) for coating - 1/4 cup (30 g) all-purpose flour (optional; mix with starch for lighter crispness) - Vegetable oil for deep frying, about 4 cups (960 ml) or enough for 2–3 inches / 5–7 cm depth - Lemon wedges, for serving (no measurement required) - Kewpie mayonnaise, for serving (optional) 1/4 cup (60 g) - Shredded cabbage or chopped scallions, for garnish (optional; no measurement required)
1. In a bowl combine soy sauce, sake, mirin, sugar, grated ginger, grated garlic, and sesame oil; stir until sugar dissolves. 2. Add the chicken pieces to the marinade, toss to coat thoroughly, cover, and refrigerate for 30 minutes to 1 hour (up to 3 hours for deeper flavor). 3. When ready to cook, drain the chicken briefly and beat the egg in a shallow bowl; lightly mix the egg with the chicken (this helps the starch adhere). 4. In a separate shallow dish combine the potato starch and flour (if using). Dredge each piece of marinated chicken in the starch mixture, shaking off excess. 5. Heat vegetable oil in a deep pan to 300°F (150°C). Fry the chicken in batches, avoiding crowding, for about 4–5 minutes per batch until the exterior is set but not deeply colored. Remove and drain on a rack or paper towel; let rest 3–5 minutes. 6. Increase the oil temperature to 375°F (190°C). Return the chicken to the oil and fry again, 1–2 minutes until golden brown and crisp. 7. Transfer to a rack to drain briefly. Serve hot with lemon wedges, a dollop of Kewpie mayonnaise if desired, and garnish with shredded cabbage or scallions.
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