Pat wings completely dry with paper towels.
In a large bowl, toss wings with baking powder, salt, white pepper, cornstarch (if using), and oil.
Arrange on a wire rack over a baking sheet to allow air circulation.
Bake at 425°F (220°C) for 45–50 minutes, flipping halfway, until golden and crispy.
Alternative: Air-fry at 400°F for 20–25 minutes, shaking halfway.
2. Make the Miso-Beurre Blanc
In a small saucepan, simmer white wine and shallots over medium heat until reduced by half (~3–4 minutes).
Lower heat and whisk in miso paste until dissolved.
Reduce heat to low. Gradually add cold butter cubes, whisking continuously until the sauce emulsifies into a smooth, glossy texture.
Stir in yuzu juice, soy sauce, white pepper, and cream (if using). Keep warm but do not boil.
3. Serve
