How to Make It
Place the garlic in a mortar, add sea salt to taste and mash to a paste with a pestle. Add the basil, little by little, pounding with the pestle until thoroughly ground.
Stir in the oil until incorporated. (Alternatively, grind the garlic, salt and basil into a paste in a food processor. With the machine on, drizzle in the oil and process to a paste.) Stir the pesto just before serving.