Easy ways to sharpen a kitchen knife

sharp kitchen knife on a cutting board with lemons.

In about all the articles I wrote here up to now I am talking about food I just realized. In my post about winter grilling and all the other posts, there is one thing that we need. A good and sharp kitchen knife.

There are many knives to choose from and I guess we all have our favorite knife. Keeping it sharp is one of the main things to do. Here are some tips and ideas.

One of the most important utensils in our kitchens is the knife. This instrument is essential for any type of preparation. However, it does need some maintenance to be accurate and safe. If we do not sharpen the knife from time to time and remove the remains of dirt, grease, and rust, this can make it difficult to use, causing us to exert more force, the cut to deviate, or the knife to slip.

It has happened to all of us: we urgently need to start preparing food, cutting meat and vegetables, and we realize that our knife is dull. Do not worry! We teach you how to sharpen kitchen knives with these homemade tricks.

Trick 1

  1. Take a ceramic mug with porous surface rims, especially on the bottom. 
  2. Flip the mug over and run the edge of the knife around the edges.
  3. The method works if the mug begins to get black dirt, which is the worn edge of the knife. 
  4. Run the knife until the edge of the blade begins to look shiny. If so, wash the knife very well to remove any type of residue, as well as the cup. 

Trick 2

  1. Get sandpaper number double zero (00). 
  2. Place the paper on a flat surface and stop the knife several times on it.
  3. Check the sharpness of the knife and repeat if necessary.
  4. If your knife already has the sharpness you want, wash it well.
  5. You can also use this trick to sharpen your scissors, folding the sandpaper in half and repeating the procedure. 

Trick 3 

  1. Sharpen with another knife. 
  2. Slide the blade of the knife against the blade of the other knife.
  3. Repeat the process for both sides. This is the most accessible trick, and we assure you that it is very effective.


Many times we believe that the edge of a knife depends a lot on the quality of the product, but this is not the case. It is normal for it to wear out because it is a utensil that we usually use every day more than once.

But there are other reasons why a knife loses its edge:

  • A lot of lateral pressure is exerted on the blade.
  • Apply cuts to very hard surfaces.
  • Leaf corrosion from citrus food acid.
  • Subject it to high temperatures.

To take care of the edge of your knife, we recommend that you always use a wooden board to cut your food. After using them, wash and dry them perfectly.

Peter Burrell

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