Blend the wild garlic, hazelnuts, rapeseed oil and lemon juice in a high-powered blender or food processor, until you reach a rough, pesto-like consistency
Scrape down the sides of the processor with a spatula and add the pecorino and a good pinch of salt. Blend again, taste, and add more salt if needed.
Transfer to a sterilised jar and cover the top of the pesto with a thin layer of oil to help keep it fresh. Store in the fridge for up to 2 weeks.
