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If you’re trying toincorporate more proteinin your diet, especially at breakfast,egg whitescan be a good option. They’re essentially pure protein, have fewer calories than a whole egg and have a negligible amount of fat. It can feel wasteful to crack open eggs and toss the yolks, however, so buying a box of liquid egg whites is a smart way to avoid that (and less messy, to boot).
How to Tell If Eggs Are Bad
But what exactly are liquid egg whites? If you’ve ever tried them, you likely noticed that they’re runnier than the egg whites you separate from a whole egg. Though the texture is different, both are essentially the same thing. “Yes—those boxed egg whites come from cracking whole eggs,” says Dan Kubiak, egg brand manager atOrganic Valley—they’re not some kind of manufactured product (whew!) And the only ingredient in the box is 100% egg whites, at least for the majority of brands out there.
How Are Packaged Egg Whites Made?
“It’s an amazing process to watch how quickly a machine can crack [eggs] and separate them out into components: whites, yolks and some incidental amount that’s a whole-egg mixture after having been broken,” explains Kubiak. Organic Valley’s 16-ounce Liquid Egg White container holds whites from the equivalent of about 10 large eggs (FYI: 3 tablespoons of liquid egg white equals one large egg.)
The reason that liquid egg whites pour differently than the viscous white you separate from a yolk at home is due to the pasteurization process (i.e., they’re treated with mild heat to eliminate pathogens) in manufacturing, according to Kubiak.
After the eggs are broken and separated, the whites go through pasteurization in stainless steel tubes. “This makes the egg whites safe to be packaged but slightly changes the consistency,” adds Kubiak. While this doesn’t impact the nutrition or taste of liquid egg whites, it can make them more difficult to whip up than eggs you break yourself—especially if you’re making a recipe where fluffy egg whites are key, like angel food cake.
While the whites get all the glory and their own packaging, those mightyyolks don’t go to waste. Organic Valley sells its leftover yolks to what they call ingredient customers—manufacturers that use Organic Valley ingredients in their products sold to retailers and food service operators such as restaurants or grocery stores with their own private label—who use them to make things like ice cream or salad dressing, explains Kubiak.
Egg Whites vs. Eggs: Which Is Healthier?
“Pure egg whites are widely considered to be one of the most bioavailable and digestible sources of protein,” says Kubiak. They can be used anywhere you’d use a whole egg, including in omelets, scrambled eggs and baking. And because boxed egg whites are pasteurized, you can also safely add them to things like smoothies and salad dressing to up the protein content. Pasteurized liquid egg whites are also the secret to making edible raw cookie dough, as author and DŌ founderKristen Tomlanwrites about in her book,Hello, Cookie Dough.
“One thing you want to watch out for is egg white ‘products’ that might have other ingredients or fillers, like gums and artificial colors,” saysAmanda Baker Lemein, M.S., RD, a registered dietitian based in Chicago. Always look for cartons in the refrigerated section that have only egg whites as an ingredient.
When to Use Packaged Egg Whites
There is a time and place for using egg whites from a carton, egg whites from the shell and whole eggs, according to Lemein—so it’s a good idea to have all three on hand. A carton of 100% egg whites is great for making muffins or waffles, as it can be easily measured for baking, notes Lemein. When she has eggs for breakfast, she often mixes one whole egg with a couple of whites from the carton tomake an omeletor egg sandwich. Lemein also says that having an egg per day is “perfectly healthy,” such as enjoying one hard-boiled over a salad.
When deciding which form of egg to use, “It really depends on what else is going on in the meal and what purpose the egg is serving,” explains Lemein. “In simple baking, it’s really just used as a binder; while in more complex recipes, like a cake, you would probably want the entire egg to avoid messing with the end product’s crumb or texture.”
So yes, packaged egg whites are healthy and come in handy for many purposes. Check the label to be sure that egg whites are all that’s in that carton, and enjoy a convenient, healthy dose of protein in whatever you decide to use them in.
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