So what is
The liquid in good canned beans is just the water and salt the beans were cooked in… filled with delicious bean flavor. And this liquid is a great thickener for not only the specific dish you're making at the moment, but for any dish that could use some thickening, some salt, and some bean flavor.
Unless the recipe tells you to keep the canned beans in their liquid, you should drain your can and give the beans a good rinse before using. This will improve the flavor and texture of your finished dish.
Use it in recipes that call for a lot of liquid
Cook's Country suggests using the liquid from canned beans in recipes like soups, stews, or chili. You can also use it in dips, and you might want to try adding it to dishes like casseroles or even braises for added richness.
It's Called Aquafaba
“The water that you soak canned or dry beans and other pulses in is called aquafaba.
But if you have excess bean broth, use it to cook more beans or lentils, thicken soups, season and drink like bone broth or add to quick breads and doughs. When I have it, I use rich, unsalted black bean broth in place of water for my sourdough discard chocolate cake—yum! Bean broth also freezes well.
Why it's desirable to rinse canned beans. The thick, cloudy liquid surrounding your favorite canned beans is edible, but that doesn't necessarily mean it's tasty or healthy. That's because the two major components in the liquid are salt and starch.
Draining and rinsing canned beans can reduce their sodium content by more than 40%. But taking just a few extra minutes is key to getting the most benefit. First, drain beans in a colander for two minutes. Then rinse the beans under cool running water for 10 seconds.
Not rinsing the beans first.
Not only is this liquid extra starchy, but it's also usually full of sodium. Unless a recipe specifically calls for using this liquid, it won't be a welcome addition to your dish.
What Is It? Aquafaba is the thick liquid that results from soaking or cooking legumes, such as chickpeas, in water for an extended period of time. It's the translucent viscous goop you probably rinse down the drain when you open a can of chickpeas.
Is drinking bean water good for you? Drinking it uncooked will bring you a few nutrients (about 5% of the nutrients present in the beans dilute into the water when soaked), but can also bring you really nasty digestive problems (nothing alarming, but still humiliating and uncomfortable), as would eating uncooked beans.
If you're wondering what these are, Newgent explains: “Saponins are a group of naturally occurring plant compounds found in beans and other plant foods, like quinoa and spinach, that can produce foam when they're dissolved in water or other liquid.” Saponins are known for causing this soap-like lather (fun fact: “sapo” ...
The starchy leftover liquid from canned beans or simmered dried beans can also be used as a substitute for any stock or broth or added to thicken soups, stews and sauces.
"Research indicates this type of sugar found in legumes is healthy for your gut," Grosse said. One popular theory as to why beans cause gas is the soapy liquid you find in canned beans. "When legumes, for example red lentils, are boiled in water, the liquid they are cooking in becomes higher in oligosaccharides.
Draining and rinsing removes, on average, 41% of the sodium.
Sodium Reduction in Canned Beans Varieties by Draining and Rinsing.
But most people can enjoy more beans with less gas with the help of these tips: Soak beans overnight in water, then drain, rinse and cook in fresh water. This decreases the oligosaccharide content. Cooking the beans in a pressure cooker may reduce the oligosaccharides even further.
Rinse all canned beans before using them. This reduces the amount of gas-producing sugars. (It also cuts down on sodium.) Soak twice and discard the water.
Canned beans are already cooked. They cost a little more than dried beans, but are still a great buy because they are fast and convenient. Just remember to rinse them first to wash away some of the sodium (salt) or buy canned beans with no added salt.
The practices of both draining and draining/rinsing canned beans can effectively reduce the amount of sodium from that contained in the product as purchased. All brands and all varieties of canned beans tested demonstrated reductions in sodium content per serving after draining and draining and rinsing.
The bottom line
They are an excellent source of fiber, plant-based protein, and other essential nutrients, such as folate and potassium. Despite the potential for contamination, canned beans are generally safe to consume and prove to be a convenient and nutritious alternative to dried beans.
For those who cannot avoid BPA epoxy can linings, rinsing canned beans, fruit, and vegetables in water may help lower the level of BPA in the food.