2 bunches fresh flat-leaf parsley, washed and thoroughly dried
Juice of 2 lemons
Salt and freshly ground black pepper
1/2 cup/125 ml freshly grated Parmigiano-Reggiano cheese
1 cup/250 ml extra-virgin olive oil
Pesto can be served fresh or it can be preserved in the refrigerator or freezer in an air-tight container. If freezing, omit the cheese and drizzle the top with oil. Thaw, then stir in the cheese.