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How to use overgrown beans

(2 Posts)
singingnutty Mon 10-Aug-26 20:33:03

For years we have grown runner beans and I threw away any which were not picked until they were overgrown and tough. I suddenly had the idea of taking out the beans from the pods and freezing them to use in soup at a later date. I did this last year with climbing beans as well. However, I wonder if anyone can explain to me why dried kidney beans (which must come from runner beans I assume) have to be well boiled when they are to be used or they can cause upset tummies. Does the drying process cause them to be potentially toxic? I am assuming that this doesn't happen when they are frozen, but I would like to be sure about this! Obviously when I used them for soup they were well boiled, but I just wonder?

tanith Mon 10-Aug-26 20:58:29

Thsy are not Runner beans they are Kidney beans and have a natural toxin in them which need boiling before they are safe to eat. You need to research how much boiling they need to make them safe.