Ingredients

• 4 lbs russet potatoes
• vegetable oil
• salt
• 6 tbsp unsalted butter
• 0.25 cup all-purpose flour
• 4 cups beef stock
• 1 tbsp Worcestershire sauce
• 3 tbsp cornstarch
• 2 tbsp water
• 0.5 tsp salt
• 0.5 tsp black pepper
• 2 cups white cheddar cheese curds