Basic Pesto Recipe

1. Process the basil, garlic, and walnuts in a food processor fitted with a steel blade--or in 2 batches in a blender--until finely chopped.

2. With the machine running, pour in the oil in a thin, steady stream.

3. Add the cheeses, a big pinch of salt, and a liberal grinding of pepper. Process briefly to combine. Remove to a bowl and cover until ready to use.
2 cups, enough to sauce 2 pounds of pasta