Does water that's been left to sit and then reboiled taste different from fresh water boiled once?
This may sound like a silly question, but I've always wondered:
If I boil some water and use some of it and leave the remainder in the kettle, and then a few days later boil that same water again, will it taste the same as if I'd emptied the old water and boiled fresh new water?
I've got a habit of emptying the kettle water and starting with fresh water to boil when I prepare my coffee (using a French press), and I'm wondering if there's no good reason to do that.
For what it's worth, the kettle has a top (so I'm ruling out dust as a concern), and the water I'm boiling is tap water that's been through a Brita filter in a jug.
If the taste is different, what's the chemical or physical justification?
Best Answer
Yes, it is different. Two things happen: the dissolved oxygen boils out, and whatever mineral solids are in there become concentrated as steam evaporates.
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Quick Answer about "Does water that's been left to sit and then reboiled taste different from fresh water boiled once?"
Yes, it is different. Two things happen: the dissolved oxygen boils out, and whatever mineral solids are in there become concentrated as steam evaporates.Does reboiled water taste different?
Reboiling Water More About Taste Than Toxicity? A study found that reboiling water was more about taste than toxicity. This also may have more of an affect your cup of tea rather than coffee. The theory stems from the fact that boiling water removes the oxygen.Is water different after boiling?
When water is boiled, it undergoes a physical change, not a chemical change. The molecules of water don't break apart into hydrogen and oxygen. Instead, the bonds between molecules of water break, allowing them to change physically from a liquid to a gas.Why is it not good to reboil water?
The Main Risk of Reboiled WaterReboiling water drives out dissolved gases in the water, making it \u201cflat.\u201d Superheating may occur, making the water hotter than its normal boiling point and causing it to explosively boil when disturbed. For this reason, it's a bad idea to reboil water in a microwave.Why should you not boil water twice?
However, if you boil the water too long or reboil it, you risk concentrating certain undesirable chemicals that may be in your water. Examples of chemicals that become more concentrated include nitrates, arsenic, and fluoride.More answers regarding does water that's been left to sit and then reboiled taste different from fresh water boiled once?
Answer 2
If it tastes different, it is either evaporating and you're getting a stronger flavor of the same water you drink.
The other thing is that it may be picking up flavor from the kettle.
Answer 3
Dissolved air is eliminated when you boil the water. However this is only really an issue immediately after the water is boiled. Waiting for a long enough time will allow the air to reabsorb into the water.
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