My son's turning 8, and he has been helping in the kitchen for 2 years. He's been chopping up a storm - parsley, Garlic, Ginger, Scallions, cilantro... the list goes on. He's my little sous chef - and he deserves (and wants) his own knife.
I let him use a VERY CHEAP single bevel white steel 150mm petty. Anything bigger scares the heck out of him. I admit - It looks pretty intimidating, and my wife hates that I let him use it (sharpest edge in the house at the moment) (well at least until next week )
Anyone have ideas on a less scary knife, but still something he can grow with, and if I'm lucky it'll be a heir loom?