Why You Should Never Toss the Liquid From Canned Beans or Canned Tomatoes (2024)

Drain the cans — but save the liquid!

ByDavid McCann

Published on November 25, 2020

In most cases, I am an advocate for cooking dried beans instead of using the canned versions. There are many reasons for this. First, I'm a bit of a geek, and I love making things from scratch. Second, dried beans are significantly less expensive. But, I confess, I always keep some canned beans in my pantry because even someone as geeky as I am has moments when the convenience of just opening the can wins out. And canned beans are good. Same with canned tomatoes. I really love fresh ones, but here in New York, there are about 9 months when I cannot grow my own — nor can I buy perfect fresh ones at the farmer's market. However, good canned tomatoes are picked and canned when perfectly ripe, so they are always reliable pantry staples. But I want to tell you a little secret: The beans and the tomatoes are not the only gifts in those cans.

When I use canned beans and canned tomatoes, I always drain them (and save the liquid). Not because there's anything wrong with the liquid. As a matter of fact, the liquid is that secret gift. 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. Anything from pasta dishes to stews can benefit from this trick. And as for canned tomatoes — that liquid is not only some of the best tomato juice you'll ever taste, but also a great way to thin any sauce, soup, or stew that would benefit from some lightly salty tomato flavor.

I can almost hear you asking "If you're going to use the liquid, then why drain it off first?" A great question. I drain for the same reason I use unsalted butter. With unsalted butter, I control the amount of salt. And with the liquid in cans, I control how much of it goes into the recipe at hand. No matter how carefully we measure and plan, a recipe may require more or less liquid on a given day. This way, I can add only as much as I feel I need instead of pouring it all in and then realizing that there's too much.

I'm also a big fan of saving the liquid from olives and capers. Dirty Martini, anyone? The point is, you're already eating whatever was in the liquid, so there's every reason to use the juice as well. It's not only thrifty, it's delicious. I call that two for two!

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Why You Should Never Toss the Liquid From Canned Beans or Canned Tomatoes (2024)

FAQs

Why You Should Never Toss the Liquid From Canned Beans or Canned Tomatoes? ›

Not because there's anything wrong with the liquid. As a matter of fact, the liquid is that secret gift. The liquid in good canned beans is just the water and salt the beans were cooked in… filled with delicious bean flavor.

Should you throw away liquid from canned beans? ›

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.

What happens if you don't rinse canned beans? ›

"It is also perfectly healthful to consume, so from a flavor perspective there is nothing wrong with not rinsing." Indeed, unrinsed canned beans can be great from a culinary standpoint in dishes like this white bean soup, where the liquid adds a "starchy richness," as the recipe developer Sheela Prakash notes.

Should you drain the water from canned vegetables? ›

Draining and rinsing of canned vegetables can reduce the sodium content from 9 23%. Analytical values for the three vegetables tested were lower than that declared on the label. Of all the nutrients tested, vitamin C decreased from 5-28% with draining and rinsing.

Should you discard bean cooking water? ›

Fun Fact: Discarding the soaking water and rinsing beans can help make cooked beans more digestible. Some people choose to save the soaking liquid because some nutrients are leeched from the beans into the liquid during soaking. We prefer to drain our soaking liquid but you can decide what works best for you.

Is the liquid in a can of beans OK to eat? ›

Officially called aquafaba, the liquid included in cans of beans is typically starchy and salty, though those qualities differ based on the brand of beans. Feel free to dip a spoon or finger in to taste it before using. “It has a viscous body from the fibers of the beans.

What to do with liquid from canned tomatoes? ›

Fresh
  1. Use the juice to make Spanish or Mexican rice.
  2. Make gazpacho and add it to the soup.
  3. Throw it into a pot of meatballs or sausages that are simmering in sauce.
  4. Add some spices to it and drink it as tomato juice.
  5. Use it to make Tomato Herb Salad Dressing.
  6. Add it to meatloaf.

Does the liquid in canned beans cause gas? ›

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.

What to put in canned beans to prevent gas? ›

To cut down on the gassy properties, you can add a little baking soda to your recipe. The baking soda helps break down some of the beans' natural gas-making sugars.

Are rinsed canned beans healthy? ›

But there are still plenty of nutrients left in canned beans after rinsing and draining, including a good amount of fiber. You can make up for small losses of nutrients like potassium and folate by tossing beans on a leafy green salad or adding an extra vegetable to your dish.

Why do you drain liquid from canned beans? ›

But if you're someone who needs to watch your sodium intake, it certainly can't hurt to drain and rinse canned beans before using them. Doing so can reduce the sodium by 40%.

Can you eat vegetables straight from the can? ›

Commercially canned foods can be safely eaten straight from the can as long as the container is intact. However, DO NOT use home canned vegetables unless you have the means to boil them for 10 minutes before eating. Don't taste or use canned foods that show any signs of spoilage!

Should you drain canned vegetables before adding to soup? ›

The short answer is: more often than not. "When using canned vegetables, you typically will want to and should drain the vegetables from their brine before using them,” says Chef Matt Bolus of The 404 Kitchen in Nashville. "The canning liquid is made of salt and preservatives.

Why do you put vinegar in beans? ›

So to make sure your red beans are at their creamiest, add the vinegar later in the cooking process, or just use it to season them at the table. On a low salt diet? Vinegar also brightens the flavor of your beans without the need for excess salt.

How long can beans sit in water before they go bad? ›

Beans should not be soaked for longer than 12 hours.

At that point, you'll be dealing with a gritty, tasteless bean that does no one any favors at dinnertime. Not to mention the fact that beans left to soak for a lengthy amount of time will begin to spoil.

Should you discard beans that float? ›

For black beans, white beans, red beans, garbanzo beans:

Cover with 2 to 3 inches of water and discard any beans that float.

Should you drain the water from a can of beans? ›

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. Open your cans of beans using a can opener. There may be sharp edges from opening the can.

What to do with leftover bean cooking liquid? ›

Using Unsalted Bean Broth

Use it to water plants or feed compost to help trim household water usage. Or, swap the unseasoned broth for water in quick breads, sourdough, and other savory baked goods.

Is the juice from beans good for you? ›

Bean juice is a good source of protein, fiber, and various vitamins and minerals. It is also low in calories and fat, making it a healthy alternative to eggs or other traditional binders in recipes.

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