The trees are a member of the same family as poison ivy, and like poison ivy, cashew plants contain a toxin called urushiol. It's found in the plant itself and the brown oil inside a nut's shell.

According to Silot, the Kingdom is home to 52 cashew processing enterprises, 6 of which are medium-sized plants, with production capacities ranging from 7,000 to 140,000 tonnes per year). The ...