lol, it means to put in boiling water for 2odd mins then take out and put into cold water to preserve the colour and bite to the kale. But... I love my veg to still have crunch I cant stand soft squiggy veg, lol, but with the kale I found I need to cook it like cabbage I think it was about 8 mins because to blanch it meant it was too hard to chew and get down, HTH.