Avoid mushy avocados with seeds that rattle when shaken as they are past their prime and will be less than delicious.
Tomatoes are optional depending on their quality.
If they are overly watery they will dilute the nutty richness of the guacamole but can always be served in slices on the side. Freshly ground black pepper Cut the avocados in quarters, discard the seeds and peel. Place in a mixing bowl and mash minimally with a potato masher, spoon or your hand. Mix just until combined and chunks of avocado are still visible. Serve in pottery bowl or on a plate lined with a lettuce leaf.