You can fry French fries and snacks with oil or fat in a deep fryer. Deep fryers come in different sizes. A 3L deep fryer is suitable for 3 to 4 people, while you can use a 6L fryer for 7 to 8 people. There are also double deep fryers to make fries and snacks at the same time. An odor filter blocks part of the frying odors, so your house won't smell too bad.