Method

• Place the rocket, parsley, garlic and capers in a food processor or in a mortar and pestle and process until the mixture is roughly chopped
• With the machine running, add the olive oil and lemon juice in a slow, steady stream, stopping to scrape down the sides of the bowl once or twice
• Season the sauce with salt and pepper to taste, and thin with a teaspoon or two of water so that it can be drizzled over grilled or roasted vegetables, fish or meat