How to Dice an Onion Like a Pro

Dicing an onion is a fundamental skill every cooking enthusiast and chef should master. Whether you want to add depth of flavor to your stir-fries or enhance the taste of your soups, dicing an onion adds that perfect touch to your culinary creations. In this guide, we’ll walk you through two different techniques for dicing an onion like a pro.

How to Dice an Onion Like a Pro
How to Dice an Onion Like a Pro

Traditional Dicing Technique

  1. Start by cutting the onion in half from stem to root. Leave half of the root intact to hold everything together.
    Traditional Dicing Technique

  2. Trim off the stem at the top and make a horizontal cut, creating two or three parallel cuts without going all the way through the onion.

  3. Turn the onion so the root is facing away from you and make vertical cuts, following the natural lines of the onion.

  4. Finally, turn the onion one more time and make cuts perpendicular to the grid you just created. As you cut, you’ll see diced onion forming.

Modern Dicing Technique

  1. Trim off the stem of the onion and use the natural lines of the onion’s layers to your advantage.

  2. Follow the lines and make cuts around the onion, working your way from top to bottom.
    Modern Dicing Technique

  3. Once you’ve made the appropriate cuts, come back through the grid you created and dice the onion into smaller pieces.

Both techniques will result in perfectly diced onions that will elevate your cooking. The traditional technique gives you uniform dices, while the modern technique uses the natural layers of the onion to guide your cuts.

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Q: Why should I leave the root intact when dicing an onion?
A: Leaving the root intact helps hold the onion together during the dicing process, making it easier to handle.

Q: How thin should I make the cuts when dicing an onion?
A: Aim for thin cuts to achieve evenly diced onion. However, the thickness ultimately depends on your preference and the recipe you’re following.

Q: Are there any alternatives to using a knife for dicing an onion?
A: While a knife is the most common tool for dicing an onion, some adventurous chefs have tried using a garlic press or a pizza slicer. However, keep in mind that a knife offers the most control and precision.


Now that you have learned two different techniques for dicing an onion, you can confidently add this skill to your culinary arsenal. Whether you prefer the traditional method or the more modern approach, practice and experience will help you perfect your dicing skills. So, grab an onion, sharpen your knife, and get ready to impress your friends, family, and taste buds with perfectly diced onions. Happy cooking!

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