If you boil salt water in a small saucepan until the water has all passed away as steam, the salt that was dissolved in it will all be left behind as a white crust on the bottom of the saucepan.
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Prev: Neil: Hello and welcome to the BBC Learning English kitchen with me, Neil, and my assistant, Feifei. Neil: That's right. I've started boiling the water in the saucepan and now I'll prepare the ingredients. Neil: There we go. Feifei: Neil.
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