Toast walnuts for 6-8 minutes in oven at 180°C

Remove stalks from kale and wash. Steam or blanch kale briefly so it becomes tender

Once walnuts are cool, place 3/4 of them into food processor and blitz until they are small pieces

Add chopped parsley, chopped kale, garlic cloves, olive oil, lemon juice and black pepper to food processor and blitz until pesto consistency

Chop the remaining walnuts coarsely and put into food processor and blitz to combine.

Taste and adjust lemon juice, olive oil and pepper as necessary