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How to Dice an Onion

Lots of recipes have the line “1 medium onion, diced” in the ingredients. Not too many of them show you how to do that. Here’s a simple way that’s easy to learn and pretty quick.

First, cut the pointy end off.

Then put the cut end on the cutting board and cut it in half straight down the middle.

Now that you have it split, it’s much easier to peel the papery outer layers off.

Now comes the real dicing. Cut down and in, starting at one side and moving across to the other. The closer you make these cuts, obviously the smaller the dice will be.

Notice in the picture that I’m starting with the tip of the knife about a half-inch away from the root. You don’t want to actually separate all the pieces from the base yet, and it’s surprisingly easy to misjudge how the length of you knife will compare to the round onion.

Continue making cuts all the way across the onion.

Once you’ve made cuts all the way across, cut straight down cross-wise up to about a half-inch from the root.

If you hate waste — or your mother drilled into you that you should never throw away food — once you get close the the root, turn what’s left on it’s end and finish dicing.

The important part here is not to get the solid piece of the root into what you’re cooking. It’s better to throw out one or two little pieces that could be used than to cook a solid chunk of root.


If you want long, even pieces instead of small ones, here’s how to slice an onion in shreds.


Want more like this? For more recipes like this, that you can hold right in your hands, and write on, take notes, tear pages out if you want (Gosh, you're tough on books, aren't you?) you might be interested in How To Cook Like Your Grandmother, 2nd edition, Illustrated. Or to learn your way around the kitchen, check out Starting From Scratch: The Owner's Manual for Your Kitchen.

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3 Comments

  1. Susan
    Posted November 8, 2009 at 9:37 pm | Permalink

    I know this is an old post, but I only just discovered this blog AND I only just used this trick, so there. ;)

    Thank you so much for posting this! I finally managed to cut an onion neatly without sacrificing blood to it!

  2. Posted November 8, 2009 at 9:51 pm | Permalink

    Susan, I don't mind ending up with some minor cuts and scrapes. It's getting the raw onion juice into the cuts that I can't stand.

  3. Susan
    Posted November 8, 2009 at 10:38 pm | Permalink

    Yipe, yes. I managed to wash them quick enough, but I'm very tired of cutting myself. XD So thanks again!

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9 Trackbacks

  1. By Pizza Soup | How To Cook Like Your Grandmother on December 21, 2009 at 2:48 pm

    [...] Dice the onion very fine and mince the garlic. Sauté them over medium heat in a couple of tablespoons of olive oil and a teaspoon of salt. [...]

  2. [...] four of the hard-boiled eggs and dice them with a wire slicer. Dice the onion, celery and scallion. Chop the thick end of the scallion roughly, but keep a small amount of the [...]

  3. [...] Dice half the onion and add it to the ground beef. [...]

  4. By Pasta carbonara | How To Cook Like Your Grandmother on January 11, 2010 at 6:56 pm

    [...] the BookWhat people are sayingThe Story of Robert HBlogPoll resultsRecipe browser « How to Dice an Onion Making Mirepoix [...]

  5. [...] Here’s a quick demo of how to dice an onion. [...]

  6. [...] Dice the pepper and onion. [...]

  7. [...] up corn that’s been cut off the cob? I’d love to hear it down in the comments.Anyway, dice the onion and mince the jalapeños and add them. You can use white or yellow onion instead, I like red [...]

  8. [...] them to make perfect little uniform rings like certain fast “food” places do.)I covered how to dice an onion a while back. That’s great for recipes where you’ll be cooking the onion, or for [...]

  9. [...] fresh) 1 clove garlic (two if they’re small) 2 teaspoons kosher saltDirectionsStart out by dicing the onion …… and mincing the garlic.Heat some fat in a pan over medium heat — butter, olive [...]

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