Cracking open a pistachio Is there a special tool available just for cracking open pistachio nuts? I'm asking because as I have gotten older, I have developed severe arthritis and joint pains, making opening them with my fingers very painful. I've always loved pistachios and hate having to ask my wife to crack them open for me.

I have tried using regular nut crackers, but the pistachio either slips out without cracking or the nut inside gets crushed.
i usually use half of a previously-opened pistachio shell! use the tip of it as a bit of lever: slip it into the opening of the one you're working on, and rotate it, and it will open it as easy as pie. the downside is that you will be able to eat many, many more pistachios this way. i usually end up with a mouth raw from all the salt, haha.