Don’t let fear stop you — put that lettuce right into your food processor. Blitz it with the garlic until broken down into little bits, then add the lemon juice, anchovy paste, dijon, Worcestershire, and cheese. Run the motor again until the mixture is smooth and evenly combined. Add the mayonnaise and sour cream, then run it again until you have a creamy, green-speckled dip. Crack in as much black pepper as speaks to you and taste to see if it needs any salt (it shouldn’t, but you be the judge).
