*
…..do you live?

I decided to find out because…. I was watching a cooking vid online, about bottling tomatoes and boiling in water method… when they mentioned every so many feet/metres above sea level needed longer boiling time.
Another time I watched a cooking segment from Switzerland… a railway stop high in the alps… at a restaurant… needed 10 mins extra to boil pasta water because of high altitude!

I live 450 metres above sea level!
My cook times are not as fast as sea level folk in Melbourne! 
450 metres the same as the place we visited last September…Santorini!
This high… in pic below!

Quote:


I try to keep both of them above sea level. (some short exceptions).

I live in an area with an average elevation  58 m above sea level.

I give rice 18 mins and dry pasta 22 mins. 

Water boils faster at sea level (or lower altitudes) than at higher altitudes, as the boiling point is lower at higher altitudes due to reduced atmospheric pressure.
Here's a more detailed explanation:
Boiling Point and Altitude:
The boiling point of water is the temperature at which it transitions from a liquid to a gas (steam). At sea level, water boils at 100°C (212°F). However, as altitude increases, the atmospheric pressure decreases, and therefore, the boiling point of water also decreases.
Boiling Point at Higher Altitudes:
At 5,000 feet above sea level, water boils at around 203°F (95°C), and at 10,000 feet, it boils at approximately 194°F (90°C).
Why Boiling is Quicker at Sea Level:
Because water boils at a lower temperature at higher altitudes, it takes less energy (heat) to reach that lower boiling point, meaning it boils more quickly. At sea level, water needs to reach a higher temperature (100°C), requiring more energy and thus a longer time to boil.
Cooking at High Altitude:
While water boils faster at sea level, it's important to note that food takes longer to cook at higher altitudes because the lower boiling temperature means the food doesn't reach the required cooking temperature as quickly.

Jasin wrote on Mar 31^st, 2025 at 2:43pm:


We went to the Sapa this year. 3400 meters above sea level. Took us 2 mins to get 2 double shot long black and only 150000 dong. 

Sophia wrote on Mar 31^st, 2025 at 2:30pm:



You are really mixed up.

Water boils slower at sea level  - it takes longer to boil.

Bobby. wrote on Jun 4^th, 2025 at 4:16pm:


How so Bobby?

Explain this then.

Sophia wrote on Jun 4^th, 2025 at 4:51pm:



That meme is wrong.
It takes less energy to make the water boil at high altitude -
so it boils much faster than at sea level.

Sophia wrote on Jun 4^th, 2025 at 7:29pm:



Dear Sophia,
you are so mixed up.
Trust me - I'm a scientist.    

Baronvonrort wrote on Jun 4^th, 2025 at 7:34pm:



The AI is wrong.

If you put a glass of water inside a tank and use a vacuum pump to remove all the air -
the water will boil at room temperature.

No energy required - and it will boil instantly.

Trust me - I'm a scientist.   

Baronvonrort wrote on Jun 4^th, 2025 at 7:48pm:



Yes - but that's all - it just simulates a very high altitude.

That's the way they use less energy to desalinate water by distillation.
They take the vacuum down to a low pressure and
then only a little bit of heat and energy will boil the water.

https://www.researchgate.net/publication/286714630_The_Natural_Vacuum_Desalinati...


Seawater desalination technology is an important way to solve the freshwater shortage problem. Natural vacuum desalination (NVD) technology generates very low pressure environment in the headspace of 10 meters high water column. The weight of the water column is balanced by atmospheric pressure, and low-temperature desalination proceeds in the headspace. NVD technology drives the desalination process without any mechanical pumping, and requires relatively inferior quality of device material and simple structures. In this paper, the basic theory of NVD technology is introduced and physical model is described. Research progresses of different types of NVD technologies are summarized, and the method of increasing freshwater production is pointed out. This paper also illustrates the outlook on future development of NVD technology.

Sophia wrote on Jun 4^th, 2025 at 8:25pm:



No - it's colder at high altitude - your heating bill would be higher.