Raw Cashews. Most of us wouldn’t hesitate to buy a bag of these delicious nuts from the local bodega. But, what you don’t know is that the ‘raw’ cashews you purchase from the store shelf are not exactly ‘raw.’ The kernels have actually been steamed to remove the dangerous chemical urushiol which is related to poison ivy and can cause an unpleasant reaction on your skin. In large amounts, raw cashews can be fatal, so steer clear!