alt Hacker NewsSeeing my neighbors gathering ginkgo nuts made me curious enough to try them, and I waded right in without understanding the risks! TLDR— they're not a great food source. It's yet another one of those cases where you have to wonder what "delicacy" means.
The actual fruit (looks like a rotten plum, smells terrible) has ginkgolic acids which cause contact dermatitis (think poison ivy).
Then the nuts themselves contain Ginkgotoxin, which interferes with your B6, screwing up your nervous system and causing seizures. Cooking reduces but does not eliminate Ginkgotoxin.
I only ate one, and ate it raw. It was a delightful texture, but tasted like chewing random plant matter. Like leaves from a tree. Was maybe half a cubic centimeter of matter. Escaped any ill effects.
According to my research, kids can have seizures from as few as 10 nuts, which would probably be like 1.5 spoonfuls if you mashed them up. The guidelines I found don't seem very scientific but supposedly a kid can safely handle 3-5 nuts over the course of a day, and an adult could handle 5-10. So it doesn't seem like there is a good margin of safety.
Overall a real risk to health for an insignificant amount of food that doesn't taste special. But a nice texture.
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> contact dermatitis
Lots of food is like this, for example mangoes.
In university, one year, our building started smelling like there had been a sewage overflow. Pretty soon, everything around started smelling like this - the stores, restaurants, cinema, etc. in central campus was stinking. It was soon found out that the decorative Ginko trees planted in the central part of campus were fruiting (probably for the first time since planting) and the fruit was getting crushed underfoot and carried everywhere. The smell took a few weeks to go away.
I eat foods with long history of co-evolution and domestication.
Barley and Yogurt, they are the dogs we domesticated from wolves that changed us too.
Daily barley water is a life changer, I don't think our digestive systems really function without a smidgen of daily barley.
What's up with the ginkgo hate on this story?
The roasted or cooked nut of the ginkgo tastes good and is filling. Not something to eat in volume anyways. You'd probably quit before any toxicity.
The fruit looks appetizing and at most smells a little funky when there are tons of them around a female tree.
I have always known it's inedible to humans so I have never tried but it could taste like custard given its color. Presumably whatever used to disperse it could eat it.
Other coniferous arils are tasty and sweet like yew for example even though the nut is supposed to be very poisonous.