Pressure cooking device with exhaust and drain valves

摘要

A food product is cooked under pressure and within a bath of hot cooking oil in a vessel when the vessel is sealed closed by a cover. The pressure in the vessel is controlled by an exhaust valve which must be located in an open position before the cover may be closed and sealed. As long as the exhaust valve is closed, it is not possible to open a drain valve and drain the oil from the vessel.