Kettle
A kettle or caldor (with a steam whistle , also known as a whistling kettle or whistling kettle ) is used to heat water to the boiling point , among other things for the preparation of tea, coffee and instant broth. Kettles with steam pipes have been in Europe since the 17th and 18th centuries. Century known.
Executions and functionality
There are kettles in different sizes, which are adapted to the purpose. Lightweight aluminum kettles for camping and hiking have a capacity of around 0.5 to around 2.5 liters. An average kettle for home use holds about two liters of water and is made of stainless steel , aluminum, copper or ( enameled ) sheet steel .
In contrast to electric kettles, the kettles are operated with heat from the outside on a stove, mobile stove or on an open fire. To heat the water quickly, some kettles, unlike modern pots with a multi-layer base, have thin bases to improve contact with the heat source (hotplate or open flame) when used on the stove.
Some kettles for use in the kitchen have a steam whistle that can be placed on the spout , which signals with a whistling sound by escaping steam that the water in the kettle has reached boiling point. In such boilers, which often have no lid and can only be filled directly via the spout, the water vapor cannot escape through cracks. This construction, which is comparable to a pressure cooker , enables quick and energy-efficient heating. Whistling kettles with filling openings at the top have a tightly closing lid to ensure the pressure build-up required for the steam whistle to function.
A special form of the kettle for mobile use outdoors with an open fire is from Ireland coming Kelly Kettle .
