A fryer is a piece of cooking equipment designed specifically for deep-frying food by submerging it in hot oil. Home cooks might use a small electric fryer to make French fries or chicken wings, while restaurants rely on large commercial fryers that can cook dozens of servings at once.

The key feature of a fryer is that it heats oil to a precise temperature (usually around 350 to 375°F) and keeps it there, which is what makes food crispy on the outside while staying moist inside. Without a fryer, you'd need to carefully monitor oil temperature in a regular pot, which is trickier and less safe.

You might also hear people use fryer to describe a young chicken that's the right size for frying (usually 2.5 to 4 pounds), though this meaning is less common. When someone mentions a fryer, they're almost always talking about the cooking appliance that can fill kitchens with the smell of crispy, golden food.