Yesterday when I wrote the post on how to cook with dried beans, I had that nagging feeling, you know the one that says I was forgetting something important. It turns out I was, I edited it into yesterday’s post, but I wanted to be sure everyone saw the update.
Unless you are willing to boil soaked, red kidney beans for 10 minutes prior to placing in the slow cooker or Crock Pot™ in fresh water, it’s best to just use the stove. Kidney beans contain a toxin called Phytohaemagglutinin, add that to your spelling list, kids. Other beans such as white kidney contain the same toxin, but in lesser amounts.
So what does this phyto-whatchmacallit toxin do? Is it like the “toxins”-scare quotes, FTW!- you supposedly lose when fasting or sweating?
Not quite. Phytohaemaggglutinin causes severe gastric distress.
Read that as: You won’t know which way to face the toilet. That’s not a happy feeling folks. Avoid it.
How do people come in contact with this bug?
Sometimes people try using raw, soaked kidney beans in salads like 3 bean salad. The high temperature of the canning process is enough to destroy the toxin which is why commercially canned 3 Bean Salad isn’t a risk.
Other times people consume partially cooked red kidney beans, which is far worse. There is an interesting phenomena with phytohaemagglutinin and slow cookers / Crock Pots™. The potency of the toxin in kidney beans can actually increase by 5x if the beans are heated only to 80°C or 176°F¹. When you simmer on the stove, the temperature is 185°F – 205°F or 85°C – 96°C and it’s quite easy to turn the stove up a little for ten minutes after the beans have begun to soften.
If you must use your slow cooker, adjust the recipe to accommodate canned or thoroughly cooked kidney beans.
The FDA recommends:
Soaking for at least 5 hours, discarding the water, and boiling in fresh, clean water for at least 10 minutes, before using a slow cooker.
FYI: The toxin is also found white kidney beans at about 1/3rd the concentration and broad beans at about 5 to 10%. Use your common sense with these beans, too.
My work here is done.
Keep calm and carry on.
Send your domestic questions to .
¹FTW, for those who don’t immerse themselves in Internet culture means For the Win. My husband is prior service, he was in the Navy and they had the initials FTN on many things. It wasn’t a happy phrase, (expletive deleted) the Navy. I thought FTW meant (expletive) the world. “It’s 5 o’clock, I’m clocking out and going home, FTW!” has very different meanings, depending on the interpretation you use. I was very relieved when I learned the actual acronym, people weren’t half as bitter as I thought.
²Reference: Bad Bug Book Foodborne Pathogenic Microorganisms and Natural Toxins Handbook Phytohaemagglutinin
³Image Credit RoccoMichele
If you’ve been reading Basically for a minute, you’ll know we’re big fans of cooking with dried beans. And if you haven’t, well, we are. The flavor and texture that properly cooked dried beans bring to the table make the canned stuff feel like child's play. The skins are in tact and firm, and when you bite into them, the insides are smooth and flavorful. But dried beans are a little bit more of a commitment to make, seeing as they’re...dried. A lot of recipes will tell you that soaking beans overnight is non-negotiable, but is that really the case? Do you really need to wait that long to eat marvelous, tasty beans?
The short answer to this question is no. You don’t have to soak your dried beans overnight. We’ll get to what you can do instead in a second, but first, a note about why we soak beans. Soaking beans in the refrigerator overnight will reduce the time they have to cook drastically. And the texture of the beans will also be it their best, with fewer split-open and burst ones. But like we said, you don’t have to commit this hard. If you’re the impatient, bean-hungry type, you can cook your beans from dry without any soaking at all.
Here's the thing: Beans that have not been soaked ahead of time will always take longer to cook, but they will, indeed, cook. But timing aside, sometimes we actually like to cook beans straight from dry, as is the case with this easy black bean soup recipe. The reason we like to cook beans from dry when making certain soups is that the liquid that they're cooked in becomes a delicious broth, negating the need for any boxed stock to give it body and depth. If you start by building flavor in the bottom of a large stock pot by sweating aromatics and chopped vegetables, you can add spices, water, and finally beans to build a satisfying broth over time.
A pot of dried bean soup is an untraditional canvas for toppings.
And by "over time," we mean at least a couple of hours. (As you can guess, bigger beans will take longer to cook than smaller beans.) Cooking your beans from dry means you’ll need to simmer those beans gently, patiently, stirring them every 30 minutes or so to make sure they’re cooking evenly and releasing flavor and starchy beaniness into liquid they're simmering in. (Sometimes it can take even longer, especially if your beans are old.)
When your beans are tender (but still maintain their shape), it’s time to really season them. Adding salt to the cooking liquid (the broth, if you’ve made a soup) and letting the beans sit for at least a half hour is the best way to make sure your beans are properly seasoned. The beans will absorb the salt via the liquid and the humble, earthy flavor of the beans will be a hell of a lot more noticeable. And you should go for more than just a pinch. Beans can take a lot of salt. Don’t be shy.
So it really all comes down to where you want to spend your time. If you have a couple of hours to kill, go ahead and make a pot of bean soup with the dried fellas. If you don’t need soup until tomorrow, let them hang out in a bowl of water overnight—they'll be tender in about half the time, which sometimes is the priority. But either way, make a big batch. Beans and bean-y soups last at least a week in the fridge, and they also freeze beautifully, meaning you can have cooked beans ready to go in minutes rather than hours. It doesn’t matter what your calendar looks like. Everyone has time for that.
Here's that bean soup you ordered:
Few ingredients have such a stellar deliciousness-to-affordability ratio, and the best part about starting a soup with dried beans is that they create their own incredibly savory broth as they cook.
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