A method and apparatus for automatically hulling freshly harvested pistachios are provided. An array of rollers is provided, wherein an alternating pattern of rollers is utilized； wherein rollers having a gritty surface alternate with rollers having a novel, perforated surface. The novel, perforated surface includes hull impact edges formed in preferably diamond shaped perforations in an expanded metal sleeve. These edges fracture the pistachio hulls into larger fragments, avoiding fouling of the huller by sticky mastic carried by the inner surface of the freshly harvested pistachios. The huller is thereby capable of operating with little or no water.
