Combine oil, lemon juice, capers, spinach & lettuce in a food processor. Blend until smooth. Season well with salt & pepper.
Cook the pasta until *al dente*. Heat spinach puree slightly, being careful not to overcook or burn. Add to well drained pasta & combine. Garnish with parsley.
Adapted from Sue Lloyd & Jacquie Keys, "A Passion for Pasta". Posted by Sherree Johansson.