This site uses only a few technical cookies necessary for its operation. By continuing to browse, you accept their use.
To find out more...
To find out more...
One should always cover a pan while heating
Tradition says: "One should always cover a pan while heating".
In other words, if you heat water (or something else), it comes to the boil faster with a lid on the pan than without.
True or false? Let's try the experiment...
In other words, if you heat water (or something else), it comes to the boil faster with a lid on the pan than without.
True or false? Let's try the experiment...
1 hour 20 min.
Easy
Last modified on: July 25th 2017
Times for this recipe
Preparation: 2 min.
Resting: 1 hour
Cooking: 20 min.
All in all: 1 hour 20 min.
If you start now, at , you will finish around : ?.Change start time
To finish around 7pm, you'll need to have started before: .Change end time
Step by step recipe
Stage 1 - 2 min.
1 litre of water is measured and poured into a pan without the lid and put on the hob with a thermometer in it.
Starting temperature of water (and room): 70°F (19°C).
Starting temperature of water (and room): 70°F (19°C).
Stage 2 - 9 min.
The heat is switched on. The water reaches 210°F (100°C) in 9 minutes and 30 seconds.
Stage 3 - 1 hour
The hob is left to cool for about one hour, to allow it to reach room temperature again.
Another 1 litre water is put in the same pan covered with the same thermometer in it, on the same hob.
Starting temperature of water (and room): 70°F (19°C).
Another 1 litre water is put in the same pan covered with the same thermometer in it, on the same hob.
Starting temperature of water (and room): 70°F (19°C).
Stage 4 - 9 min.
The heat is switched on. The water reaches 210°F (100°C) in 9 minutes and 27 seconds.
Stage 5
The result is shown more clearly in the diagram: the temperature of the uncovered pan in red and that of the covered pan in green.
Conclusion
False: The time difference is too small to be significant. It really doesn't matter whether the pan is covered or not.
Source: Homemade.
Other recipes you may also like
African style chicken
This is a sort of smoked chicken, cooked in a tomato-coconut sauce, and served with kidney beans and plain rice. It's quite a simple recipe, with ready-made ingredients, but which needs a long cooking time on low heat (one hour). February 21th 2011419 K5 2 hours 4 min.
Hot tomato sauce
This is a quick tomato sauce, just the thing for dipping crisps (chips, if you are American), or nachos. It is very similar to the sauce served with aperitif snacks in Tex-Mex restaurants. September 20th 2012127 K4.1 45 min.
Creamy plum and pear clafoutis
Here is a clafoutis that is quick to make, with a delicate blend of plums and pears. This recipe can be varied easily to use any good fruit in season. November 3rd 201861 K3 55 min.
Mornay onion tart
In a shortcrust pastry base, a rather thick onion tart, where onions and lardons are deliciously bound with a Mornay sauce. June 23th 202422 K 2 hours 15 min.
Sweet pancake rolls from Brittany
Stewed apples, raisins soaked in whisky, toasted almonds, rolled in a lightly caramelized pancake. March 10th 2015254 K4.3 2 hours 20 min.
News list of cooking-ez.com
Sign up to receive the latest recipes (next batch due to be sent on 2025-09-07)
Note: We'll never share your e-mail address with anyone else.
Follow this recipe (as 2 people already do)
If you are interested in this recipe, you can "follow" it, by entering your email address here. You will then receive a notification immediately each time the recipe is modified or a new comment is added. Please note that you will need to confirm this following.
Note: We'll never share your e-mail address with anyone else.
Alternatively: you can subscribe to the mailing list of cooling-ez.com , you will receive a e-mail for each new recipe published on the site.
The 1 comment already posted on this recipe