How to Make It
In a bowl, mash the avocado with a potato masher until it is smooth. Stir in the lime juice, mayonnaise, cilantro, salt and pepper.
Put guacamole in serving dish and drizzle with olive oil. Serve immediately.
If not serving immediately, press a piece of plastic wrap flush into the top of the guacamole, refrigerate and serve preferably within 24 hours. Drizzle with olive oil just before serving.