Japanese Chicken Wings

INGREDIENTS

• 3 pounds chicken wings
• 1 egg, lightly beaten
• 1 cup all-purpose flour for coating
• 1 cup butter
• SAUCE
• 3 tablespoons soy sauce
• 3 tablespoons water
• 1 cup white sugar
• 1/2 cup white vinegar
• 1/2 teaspoon garlic powder, or to taste
• 1 teaspoon salt