Fish and Chips - Jo Cooks

Ingredients

• 6 large russet potatoes
• 1 tablespoon olive oil
• ½ teaspoon salt (to taste)
• ½ teaspoon coarse black pepper (or to taste)
• 1 cup all-purpose flour
• ½ tablespoon baking powder
• ¼ teaspoon cayenne pepper
• 1 tablespoon Old Bay seasoning
• 6 ounces stout beer (cold, or more as needed)
• 6 fillets white fish (cod, haddock, tilapia)
• ½ cup cornstarch (for dredging)
• vegetable oil (for frying)