In ancient Persia, kitchens were equipped with a built-in deep fryer called 'sini'. The sini was a large, shallow cooking vessel made of copper or brass. Persians used this deep fryer to prepare dishes like 'falafel' (deep-fried chickpea patties) and 'zulbia' (deep-fried sweet pastries). The sini was heated by placing it over a fire, and the food was cooked in hot oil or fat. Persian cuisine has a long history of deep-frying, and the use of a built-in deep fryer in their kitchens allowed for efficient frying of various ingredients.
