Fresh ginkgo can be boiled with shell, but pay attention to the way of eating, if there is no attention to the place may be food poisoning. Usually when it is cooked, peel off its shell and eat. In addition, there will be germ inside the pulp, which is best removed when eating. If it is not cooked, it is best not to eat, in order to avoid poisoning.
In general, put the ginkgo into a pot and cook for about 8-10 minutes. Some people will worry that it's poisonous to cook it for a long time, but it's not necessary. If you are worried about not cooking, you can cook it for about 10 minutes after boiling, so it is fully cooked.
It is toxic. Do not overdo it, especially when it is eaten raw. Generally, adults had better not eat more than 10, children's words to eat 2 - 3.