With a fryer, you can prepare fries and fried snacks. Hot oil or grease is used to heat the snacks. There are different sizes of fryers, so you can use them in different situations. A fryer with a capacity of 3 liters is suitable for 3 to 4 people. You can use a fryer with a 6-liter capacity for 7 to 8 people. Some fryers have an odor filter that blocks part of the smell. Other fryers have a built-in grease filter, so you don't have to change the grease or oil as often.