Stay tension free - Never worry about boiled milk overflowing with this stainless steel boiler's loud whistle alerting you when it reaches boiling point. Made to last - Crafted entirely from high-quality stainless steel, this boiler is durable enough for daily use and resistant to corrosion or rusting. Works on any heat source - Whether using gas or induction, the base of this boiler ensures efficient heat transfer for fast, consistent results no matter your kitchen setup. Easy clean up - Its seamless construction makes cleaning quick and simple with no nooks or crannies for food particles to get trapped in. nstructions: 1.Remove the Whistle 2.Fix the Funnel to the whistle area pour 2 to 5 glasses of water (depending on the boiler capacity) in to the outer container. 3.Take the Funnel out and Fix the whistle again. 4.Put the milk in the inner container and you?re ready to go. Place the boiler on Gas/ Induction. Upon listening the Whistle, Take off the boiler.