Strip the leaves from the thyme

Finely grate the parmesan

Peel the garlic and roughly chop

Put the hazelnuts into a foodprocessor (use the small bowl if you have one or use a stick blender) and pulse until course

Add the cheese, thyme, garlic, zest and lemon juice. Pulse until desired consistency is reached, scrapping down the bowl as required

Add the oil and some salt & pepper to taste. Briefly pulse to combine

Best eaten fresh but can be stored for up to 3 days