Karaage (Ayam Goreng Jepang)

Bahan-bahan (4 porsi)

• 1½ lb boneless, skin-on chicken thighs ((4–6 pieces; read the blog post for details))
• ½ tsp Diamond Crystal kosher salt
• ⅛ tsp freshly ground black pepper
• ½ tsp ginger ((grated, with juice))
• 1 clove garlic
• ½ –1 Tbsp soy sauce
• ½ Tbsp sake ((or substitute dry sherry, Chinese rice wine, or skip it))
• ½ tsp toasted sesame oil
• 3 –4 cups neutral oil
• 2 Tbsp potato starch or cornstarch ((plus more, if needed))
• 2 Tbsp all-purpose flour (plain flour) ((plus more, if needed))
• lemon wedges
• Japanese Kewpie mayonnaise
• shichimi togarashi (Japanese seven spice)