How to Slice an Onion, a Step-by-Step Photo Tutorial

by Heather on May 13, 2010

Heather says:

Knife skills are important for every cook and this step-by-step photo tutorial illustrates how to slice an onion. With a little practice slicing onions becomes a quick chore and eliminates the temptation of the expensive pre-sliced onions in the produce department. Yay for self-sufficiency.

The right tools help. For this chore I prefer a chef knife1, but a utility knife1 can be used in a pinch. Ready?

Onions

Grab the onion, a knife, and a cutting board.

Cut off the tip

Slice the tip off of the onion.

Slice the onion in halfSlice the onion in half, through the root. Use the tips of your fingers to steady the onion.

Peel the onionPeel the top most layer from the onion. If the onion is bruised, sometimes a couple of layers will need to be removed.

Slice almost to the rootGrip the onion with the tips of your fingers. Work from the opposite side. Insert the tip of the knife close to, but not through the root. The root will stabilize the vegetable until it has been sliced. For best results try to keep the slices uniform in width, but please don’t break out a ruler. Having the slices uniform in thickness ensures the onion will cook evenly in a recipe.

Slice off the root Slice off the root of the onion. It’s more fun if you make kung-fu noises during this part.

AdmireAdmire your work, then break apart the piece.

Scattered OnionsAll done!

Questions?

1 These are affiliate links. They are for knives I own and have used for over ten years. I particularly like the chef knife’s size for my hand. There are higher quality knives out there, but these are the ones I currently own and find useful.

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  1. [...] – 1/2 cup strong veggie broth. I use broth left over from making gluten. Slice an onion in strips exactly like this, as much as you want (I use probably 1/2 a medium/large onion) and add to broth just as it comes to [...]

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