Induction cooker is mainly based on the principle of electromagnetic induction technology. Current generates variable magnetic field after running through the wire coil. Eddy current is generated at the bottom when the magnetic field induces the cooker plate. A large amount of thermal energy produced can heat the bottom quickly, thus heating up the food very fast, thus a more efficient and power saving technique for cooking. Unlike other forms of cooking, heat is generated directly in the cooking vessel, as opposed to being generated in the stove top by electrical coils or burning gas. To be used on an induction cooker, a cooking vessel must be made of a ferromagnetic metal(steel, iron e.t.c).