The ancient Chinese kitchen featured a built-in deep fryer known as 'lu'. The lu was a large bronze vessel with a built-in heating system. Chinese cooks used this deep fryer to prepare dishes like 'you bing' (deep-fried pancakes) and 'jian dui' (deep-fried sesame balls). The lu was heated by placing it over a fire, and the food was cooked in hot oil. The Chinese cuisine has a long history of deep-frying, and the use of a built-in deep fryer in their kitchens allowed for efficient and controlled frying of various ingredients.
