Pure Gold: Federal Donuts' Master Fried Chicken

Ingredients

• 1 1/2 tablespoons salt
• 4 teaspoons onion powder
• 2 teaspoons dry mustard
• 1 whole chicken (about 4 pounds)
• 3 cups cornstarch
• 1 1/2 cups all-purpose flour
• 2 teaspoons salt
• 3 cups cold water
• 2-3 quarts canola oil