To make kale crisps you will need
A bunch of kale
Preheat a low oven (about 130c) and line a baking sheet with baking parchment. Cut off the tough stalks with scissors (or tear them off). Wash the kale and dry thoroughly by patting dry or using a spinner. Spread the kale over the sheet and either spray with olive oil (this is the healthiest option as it uses much less oil) and sprinkle over a pinch or salt, or, if you don’t have an oil spray, toss the kale in a bowl with olive oil and a pinch of good sea salt. Pop in the oven for 10-15 minutes turning half way (don’t panic when you check half way through that the kale is all floppy – it suddenly goes crispy during the second half of cooking time!). If you used a spray, re-spray after turning half way through.
PS I used curly kale, but I am sure any kale would work – purple kale or even cavolo nero – please let me know if you try it!