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Slow cook onions, and the results are delicious

THE CALIFORNIA COOK

Caramelizing onions over several hours creates a complex taste and smooth texture that can be savored in just about any dish or as a spread.

January 21, 2009|Russ Parsons

The daughter met me at the back door: "What is this stuff?" she asked. It was Monday night, our regular date for her to come over and wash her clothes and then eat dinner and watch "Dexter" with me (nothing like laundry and a TiVo-ed serial killer for father-daughter bonding).

She'd arrived early and, hungry, had dug around in the refrigerator for something to snack on. Finding a pot of my latest hobby, she'd smeared some on bread, topped it with a dab of goat cheese and popped it in her mouth.

"It's like it fills your whole mouth with savory!" she said (I keep insisting she's the real food writer in the family). "How do you make it?"

Well, I told her, you kinda just cook onions. "And then what? What do you add to it?" You just cook onions. That's it.

Such is the miracle of long, slow cooking. The happy result of a marriage between 5 pounds of onions and four hours to kill, these onions caramelize to a deep, mahogany reddish-brown with a marmalade-like consistency.

There is sweetness, yes, but there is so much else, a powerful, mouth-filling deliciousness that can't be described better than "savory." And the texture is buttery enough that they can actually be used as a fat replacement.

There are so many things you can do with caramelized onions. There's that simple snack my daughter made (toast the bread and you can call it crostini). My wife's favorite pizza is topped with caramelized onions, goat cheese and black olives.

Or use it as a flavoring base. Stir it into a bowl of cooked grains such as buckwheat or farro, and just a little sauteed bitter greens becomes a great meal. Smear a bit onto a sandwich or a warm tortilla. It's also terrific stirred into pasta sauces, stews or a pot of beans. Build a layer of it into a gratin and it will perfume the potatoes and make the texture seem richer without adding any fat. You can even serve it straight, dressed up with a little minced rosemary, as a sauce for meat.

Stuck at home last week with a head cold that made me unfit for work or company, I'd busied myself by making a big pot of caramelized onions. Other folks might kill sick days by watching soap operas or game shows, but for me, there's nothing like a little mindless cooking.

Though I have to confess it's almost a stretch to call this cooking. Preparing food doesn't get much simpler. Here's how it goes: Slice onions; put them in a pot with a little oil and some salt; cook and stir; cook and stir; cook and stir; cook and stir -- well, you get the picture.

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Cooking caveats

But just because there are no long lists of ingredients or complicated techniques does not mean caramelizing onions is without pitfalls. The main one -- and it's a dish-killer -- is that caramelizing can come awfully close to burning, and once you've scorched the onions there's no way to get rid of that bitter flavor but to dump them out, wipe the pan clean and start over.

To avoid this, cook the onions in the heaviest pot you have over the lowest heat possible for much of the time, stirring as often as you can. That should be at least every 15 to 20 minutes for most of the cooking, shortening to 5 to 10 minutes when you get down to the end stages.

The pot should be really big, too. I usually use my nearly 7-quart enameled cast-iron Dutch oven to cook my onions and at the start it's almost full to the top. But the onions wilt and shrink dramatically during cooking. Sprinkle them with a little salt to help draw out the moisture and just enough oil to keep them from sticking. Cover the pot and place it over medium-low heat.

After about 20 minutes you'll find that the onions have started to soften and after about 45 minutes, they will be swimming in moisture -- it's amazing just how much water an onion contains. At this point, you can increase the heat to medium and remove the lid to evaporate as much of that liquid as possible.

After about 75 minutes, the liquid will be very reduced and the onions will be the color of oatmeal. Here's where it starts to get tricky, because there's no longer enough moisture to keep the onions from scorching. You need to reduce the heat as low as it will go (use a flame tamer if necessary), and be vigilant about stirring every 10 to 15 minutes (I found this was a really good chore while I was ripping CDs onto my wife's iPod).

When you reach the two-hour point, there will be almost no water left. The onions will have darkened a bit and will taste sweet, if slightly bland. Start stirring every five to 10 minutes.

At the three-hour point they'll be getting really close. The color will have darkened substantially into a reddish-gold and the flavor will have become notably more complex (you'll also find that your house will smell absolutely amazing).

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