Use this tag for questions about selecting, identifying, storing, preparing, replacing or cooking with onion as a star ingredient.

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179
votes
43answers
23k views

How can I chop onions without crying?

Onions are an excellent addition to many dishes, but cutting them can be frustrating when they make you "cry" all the time. Does anyone know any tips or tricks to help minimise the tears when ...
15
votes
1answer
559 views

A definitive method of dicing an onion

It bugs me that I've just sort of self-taught a method of turning a whole onion into a nicely diced pile. I'm going to assume my method is inefficient and wasteful. Could someone explain how I should ...
11
votes
6answers
17k views

How do I tone down the intensity of raw onion?

How can I tone down the intensity of raw onion? Some onions have a more acute taste and smell than others of the same type, and I would like to avoid them in salad dish, or making dips with raw onion. ...
20
votes
11answers
107k views

How long should I keep a cut onion?

Since I only cook for one or two, I will tend to buy an onion and only use part of it, and then keep the rest in the fridge. Sometimes it will be a while before I use the rest. Is there any guidance ...
22
votes
6answers
849 views

How to caramelise onions?

Often recipes ask for caramelised onions. What are some good techniques for cooking them this way, as it seems to take a while, and often even if they are on a low heat they can brown a bit too much ...
20
votes
4answers
4k views

What are the differences between different types of onions, and when do you use them?

I used a recipe for a mean black-eyed-pea salad this past weekend which called for a red onion. Since I wanted extra onion flavor in the salad anyway, I decided to pick up a Vidalia onion to throw in ...
2
votes
1answer
123 views

What's a good substitute of onion for someone with an onion allergy?

I am an Allium lover with a strong allergy to all Alliums. It is technically a sensitivity as it isn't an instant reaction, but spending an hour in the bathroom because of one stray piece of red onion ...
13
votes
3answers
19k views

How do I sweat onions?

A recipe calls for me to sweat finely chopped onions. What do I do, and why?
7
votes
5answers
9k views

Why do you need to fry onions and garlic before adding other ingredients to a dish?

I've been using an online Paella recipe that instructs you to sweat some onions for 5 minutes, then add garlic for a few minutes, followed by the vegetables, tomatoes, rice and stock. Is there a ...
6
votes
2answers
4k views

Is there a difference between green and spring onions?

I've seen some recipes call for green onions but always use spring onions? Is there a difference between them? Is there a better substitute?
7
votes
2answers
2k views

Should my chicken sit in liquid as it roasts, or not?

For the last chicken I roasted, I used this recipe, slightly modified. The biggest modification was that I added liquid to the pan, it was eyeballed but let's say I used about 1/2 to 1 cup total of a ...
9
votes
1answer
464 views

Why fry onions without oil and then add oil?

In several recipes I have seen lately, the instructions are to sautee onions and garlic without oil for a few minutes, and then add oil and continue until golden. If it's of any help, these are ...
10
votes
2answers
979 views

How to store Onion

I've just harvested onions from my garden. I have quite a few and should last me about 3+ months. What is the best way to prepare the onions for storage and how should I store them so they last as ...
15
votes
1answer
3k views

(Why) do onions taste sweeter when cooked at lower temperature?

I use onions to add a sweeter taste to some dishes, for example in tomato sauce for pasta. I cook them in oil, with some salt, before adding the other ingredients. It seems to me that when I turn the ...
5
votes
2answers
4k views

Why did my French onion soup with 'red' onions come out tasteless and bland?

I usually make the French onion soup with white onions. The prodecure I normally use is as followed: I slowly caramelize them on a low heat for around 40min. Then I add some sugar, salt and oil ...
2
votes
1answer
924 views

Cooked or caramalized onions in the refrigerator

How long can I store caramalized onions in the refrigerator?
11
votes
2answers
2k views

Why sweat but not brown?

Many recipes require that you sweat vegetables (celery, onions, etc). Why not saute them and brown them a little instead? Would not that develop the flavors even more? Why would you not want that?
10
votes
4answers
63k views

Are Chives and Green Onions the same thing?

Is it OK to substitute one for the other?
8
votes
2answers
7k views

Is it safe to eat green onion slime?

I just harvested some scallions from the garden, where it's getting bit chilly (late November in Seattle). After chopping them, I realized that their insides were covered in a gelatinous, slippery, ...
7
votes
2answers
1k views

What can I use to flavor savory chicken stuffing instead of onion?

I made the mistake of thinking I had more onions than I did (those orange bags filled with old onion skins look fuller than they are), and now I don't have any onions left for my savory dressing. Can ...
6
votes
1answer
6k views

Does aged onion/garlic turn green when frying?

I was frying onions and garlic the other day and the paste turned green. I had bought the onions/garlics many days ago (20-30 days) I guess. Could that be the reason? There was no fungi or something ...
4
votes
1answer
3k views

How long can I keep sauteed onions in the fridge?

I'm a working mom, so I'm always trying to find ways to cut down on cooking time. My newest trick is to saute a huge batch of onions and keep it in a container in the fridge, so that I can skip the ...
3
votes
5answers
1k views

Which type of onion causes the least eye irritation

I am willing to forgo a little taste if I don't have to take 3 breaks while dicing an onion. Should I use red, white or yellow to minimize eye irritation. I have a small fridge/freezer so freezing ...