1.1 This test method covers the energy consumption and cooking performance of large-vat open, deep fat fryers. The food service operator can use this evaluation to select a fryer and understand its energy efficiency and production capacity.1.2 This test method is applicable to floor model gas and electric fryers with 50 lb (23 kg) and greater fat capacity and an 18-in. and larger vat size.1.3 The fryer can be evaluated with respect to the following (where applicable):1.3.