Keep them airtight
Air and moisture are the main enemies of cashews. Keep them in a sealed container or a pouch with a good seal.
Cool, dry and dark
Store cashews in a cool, dry place away from direct sunlight. Heat and light speed up the loss of taste and crunch.
Reseal after opening
Close the pack properly every time you open it. For shops, keep stock off the floor and away from strong smells.