When should I change my knife?


When should I change my knife?
I already spoke to you in a previous post about knives, those without which nothing is possible (or almost) in the kitchen, so I'm going to come back to them a bit and try to answer the question "When should I change my knife?
12 K 4.7/5 (15 reviews)
Grade this page:
Last modified on: November 2nd 2017
For this post: Comment Follow Send to a friend
When should I change my knife?
You may remember how important it is to pay a lot of money for your knives, and to choose models with a stainless steel blade, a handle made of a composite material often called "plastic", etc. This is still true, and I dwell a little on the blade, which being made of steel, with time dulls, sharpens and must therefore be regularly sharpened. This is always true, and I dwell a little on the blade, which being steel, with time dulls, de-sharpens and must therefore be regularly sharpened.

The best way to do this is to use a sharpener, and in an elegant gesture (but unfortunately not easy to catch) you sharpen the blade again. To make a long story short, you should always have razor-sharp knives, it's always much more pleasant to cook with.

Let's come back to this knife sharpening, it turns out that in the gesture of sharpening, one naturally accentuates one's effort on the middle-lower part of the knife blade, and therefore it is there that the wear will be the fastest. This wear can be seen over time, it creates in the blade of the knife, very slowly, a small hollow, a slight curvature, which you can see on this photo (red arrow):

used knife



This hollow, if visible, is a sign that your knife is at the end of its life in "kitchen" mode: You will find it difficult to sharpen it, more and more, so it will cut less well, and will not be ideal for cooking.

To make a comparison, see these 2 knives side by side:

worn knife vs. new knife



The top one is new, the bottom one has lived well, note the hollow of the blade at the bottom, and the nice rounding of the top one.

It's time to change the bottom one, of course you shouldn't throw it away, but use it for something else than cooking (garden, DIY, ?) or recycle it.

Well, it's not always easy, we are often attached to our tools, that we have well in hand, but it is necessary to take the step, the old knives even if they have a sentimental value, can become a brake to your good cooking.


To sum up: When the blade of your knife starts to get hollow, it is time to think about changing it.

Lasts posts
The thermometer is your friend
The thermometer is your friend
There are many recipes or foods that require a (very) precise cooking temperature: foie gras, sugar for caramel, meats and fish, and not forgetting pastries. For these few examples, getting the cooking temperature wrong can spoil the whole recipe or dish: undercooked, it's no good or misses the...
April 10th 20258355
Travel cakes
Travel cakes
You may have come across the term "travel cakes" ("gateaux de voyage" in french) for certain pastries, so let's take a look at what they're all about.
January 27th 20252,734
The aromatic power of sugar
The aromatic power of sugar
In the kitchen, sugar doesn't just sweeten, it also has an exceptional ability to capture flavors. Combined with aromatic ingredients, such as citrus zest, it acts as a veritable sponge for aromas. By taking the time to let the sugar soak up the flavors, you can transform your desserts, making...
December 25th 20243,1035
The little trap of thick cream
The little trap of thick cream
When you need to add cream to a recipe, you might be wondering: thick (heavy) cream or liquid cream? In most cases, there's no big difference: you can use either. But there is one exception, and that's when the cream needs to be cooked, for a sauce for example, and here the difference between...
December 13th 20243,3665
Sauce and salad: When and how to mix them?
Sauce and salad: When and how to mix them?
When dressing a salad, there's a kind of golden rule: add the dressing very shortly before serving, especially if your salad contains crunchy elements such as croutons or fresh vegetables, which will retain their crunchiness or crispiness. But, as is often the case in the kitchen, there are...
November 29th 20243,4945
Other pages you may also like
Soup vs. potage
Soup vs. potage
It's true that we're finally coming out of winter as I write these lines, and that we'll all be making, no doubt, a little less soup and potages, but even if it's out of season, it really is a simple and delicious dish, which is one of the always easy answers to "What's for dinner this (Sunday)...
April 9th 20227,091
Fruits which can ruin your jelly
Fruits which can ruin your jelly
There are many ways of making a fruit mousse, but one of the simplest is to prepare a fruit jelly (basically a fresh fruit coulis with gelatine) and then mix this jelly before it sets completely with whipped cream. The result is perfect for filling a charlotte, for example. But do beware;...
March 6th 201373 K4.0
Perpetual stock
Perpetual stock
It's something you have probably have done yourself: cooked or pre-cooked vegetables before adding them to a recipe. This is almost always done the same way: peel the chosen vegetables (carrots, for example), cut them up, boil them in salted water (using a tablespoon or so of coarse salt per litre),...
November 22th 201626 K5
What is the difference between bakery and patisserie?
What is the difference between bakery and patisserie?
This is a question that you may well have asked yourself and which I will attempt to answer. In France the two trades of "boulangerie" (bakery) and "pâtisserie" (patisserie and confectionery) have always been quite distinct, but where exactly do the boundaries lie? .
February 7th 2017127 K 14.1
Candied fruits: don't get ripped off
Candied fruits: don't get ripped off
Do you like candied fruit? You might like to nibble a handful or add it to a recipe, like a classic fruit cake or delicious Italian specialities like panettone or sicilian epiphany pie.
June 21th 201761 K 24.2
Post a comment or question
Posted by:
I am not a leaving thing
Follow this page (as 3 people already do)
If you are interested in this page, you can "follow" it, by entering your email address here. You will then receive a notification immediately each time the page is modified or a new comment is added. Please note that you will need to confirm this following.
I am not a leaving thing
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.

Back to top of page