Put the basil, garlic and pine nuts into a pestle and mortar and crush until it is reduced to a paste.
Add enough olive oil to give a consistency you like and mix in the Pecorino cheese.
Transfer to a clean dish and either use immediately or place an airtight container. Cover in a layer of olive oil, place in the refrigerator (for up to one month) until ready to use.
Type the ingredients you want to use, then click Go. For better results you can use quotation marks around phrases (e.g. "chicken breast"). Alternatively you can search by chef, programme, cuisine, diet, or dish (e.g. Lasagne).
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