A pistachio nut splitting in hull. A naturally split pistachio is the prime marketable product. Nonsplit nuts are worth considerably less. (Note: husk was peeled back for photo)

A pistachio nut splitting in hull. A naturally split pistachio is the prime marketable product. Nonsplit nuts are worth considerably less. (Note: husk was peeled back for photo) Credit: Louise Ferguson
A pistachio nut splitting in hull. A naturally split pistachio is the prime marketable product. Nonsplit nuts are worth considerably less. (Note: husk was peeled back for photo) Credit: Louise Ferguson