you look in the "description of the manufacturer" this product for man / woman following key message:
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Manufacturer's Description
Simple Einpiksen the egg, the egg dadruch not burst during cooking.
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That is perfectly true.
An egg that has already been broken by the application of Piksers will hardly find their way into the cooking pot and can therefore logically not burst during the cooking process. And I can assure, the eggs will break because the whole construction is hakelig and appears to clamp the spring located in the interior of this high-tech device.
The WMF Eierpikser was so recommended to all those who want to open their egg for making scrambled eggs in an unconventional way.
For those who want to use the (controversial) method of Eianstechens for cooking eggs I recommend anyway stable Pushpin (which cost less than 2 cents each)
Greeting
Ronald