Sweet Potato Tempura and Steak Sandwich with Bok Choy and Miso Mayo Recipe | Epicurious

Ingredients

• 2 teaspoons finely grated ginger
• 1 large clove garlic, finely grated
• 3 tablespoons vegetable oil, divided
• 2 tablespoons low-sodium soy sauce
• 1 tablespoon mirin
• 1/2 teaspoon kosher salt
• 1/4 teaspoon black pepper
• 10 ounces skirt steak, cut into 2 pieces
• 2 heads baby bok choy, split in half lengthwise (1/2 pound)
• 1 large sweet potato
• Vegetable oil, for frying
• 1/2 cup all-purpose flour
• 2 tablespoons cornstarch
• 3/4 teaspoon kosher salt, divided
• 1/2 cup very cold club soda
• 1/2 teaspoon white miso paste
• 1/4 cup mayonnaise
• 1 teaspoon fresh lemon juice
• A mandoline