Are chestnuts edible by humans?

If yes, how can you cook them?

Are chestnuts edible by humans?
Yes, you can eat them. Here is how:

http://www.ehow.com/how_9920_roast-chest...
Reply:Yes, some species are edible. You can also boil them for 10-15 mins.-- just be sure to cut open the shell-- X-pattern is usual, there is even a chestnut knife, so they don't explode.
Reply:Yes! You roast them. Have you ever heard that Christmas song line "chestnuts roasting on an open fire"? You usually roast them and you sometimes see chestnut carts in busy town areas and fairs especially in England ime not so sure in other countrys.