Mastering the Art of Onion Chopping with a Food Processor

How to Chop Onions in A Food Processor

Chopping onions can be a tearful experience for many, but fear not! There are ways to conquer this culinary challenge. One effective method is using a food processor to do the job. In this article, we’ll explore how to chop onions in a food processor, discussing its benefits, techniques, and alternative tools for onion chopping.

Taming the Tears: Techniques to Minimize Onion-induced Waterworks

Chopping onions can trigger the release of tear-inducing gases. However, with a few simple tricks, you can minimize the waterworks. Here’s how:

Pre-freeze the onion for 5 minutes

By placing the onion in the freezer for a short while before chopping, you can reduce the release of odorous gases. Freezing slows down the chemical reactions, giving you more time to chop without tearing up.

Create an ice bath

If freezing isn’t an option, immerse the onions in a bowl of ice water for 30 minutes. The cold water partially freezes the onion’s liquids and gases, preventing them from quickly dispersing into the air. Alternatively, chilling the onions in the refrigerator for 30 minutes can also help.

Leave the stem intact

The highest concentration of the tear-inducing compounds can be found in the stem section of an onion. To minimize gas release, carefully cut around the stem before chopping the onion. It may require practice, but the effort is worth it. Onion goggles can provide added protection during your initial attempts.

Use a sharp knife

A sharp knife minimizes the damage to onion layers, reducing the release of juices and gases. Avoid using dull knives, as they can crush the onion, leading to more tears. Keep your knives sharp with honing steel and a knife sharpener.

Utilize a food processor

A food processor is a versatile kitchen appliance that can make chopping onions a breeze. Let’s explore the steps to chop onions using this handy tool.

How to Chop Onions in a Food Processor

Chopping onions in a food processor is a convenient and efficient method. Follow these steps:

  • Remove the papery skin from the onion.
  • Cut the onion into quarters swiftly and carefully.
  • Place the onion quarters in the food processor bowl.
  • Utilize the pulse function, pulsing the onions 5 to 7 times in 1-second intervals.
  • Scrape down the sides of the bowl periodically to ensure even chopping.
  • Transfer the chopped onions to a dish for further use.
  • Keep in mind that even with a food processor, some gas release may occur while quartering the onion.
  • To preserve the onion’s layers, you can install a slicing disc in your food processor. This attachment enables you to obtain even slices that can be separated into layers. Alternatively, a julienning disc can be used for more uniform onion chunks.

Alternative Tools for Chopping Onions

If a food processor is unavailable, several alternative tools can assist you in chopping onions effectively. Here are a few options:


A chopper, similar to a mini food processor, can be used without electricity. Place the onion quarters in the chopper and repeatedly press the chopping button to achieve the desired chop size.


While primarily used for blending, a blender can also serve as a makeshift chopper. Place a few onion quarters in the blender pitcher and use the pulse function to achieve the desired chop consistency. Remember to scrape down the sides for even chopping.

Mandolin Cutter

A mandolin cutter is a versatile hand tool that allows for slicing, dicing, mincing, and julienning various vegetables. Use the guard provided for safety and consider using cut-resistant gloves when handling the sharp blade.

Vegetable Slicer

A manual vegetable slicer can produce uniform slices or chunks of vegetables, including onions. Look for a slicer with various blade attachments for added versatility.

Vegetable Dicer

A vegetable dicer is perfect for achieving evenly sized cubes. Place the vegetable between the grid blades and the hammer, then press the lever down for cubes. Keep in mind that some dicers require assembly and disassembly time.

Alternatively, the Alligator dicer comes with a plastic tub that collects the diced onion, preventing gas from reaching your eyes.


Chopping onions no longer needs to be a tearful experience. With the help of a food processor or alternative tools, you can efficiently chop onions while minimizing tears. Experiment with different techniques and tools to find the method that suits you best. Say goodbye to watery eyes and hello to perfectly chopped onions for all your culinary creations!