With a sharp paring knife, divide an avocado into 4 sections by cutting all around the stone from top to bottom, then cutting it again in the same way, perpendicular to the first cut
Removing the Stone
Twist each pair of sections slightly to loosen them from the stone. Remove 3 of the 4 quarters with your fingers. Pull off the stone from the remaining section. Peel all 4 sections
Place peeled, pitted avocado quarters in a glass pie plate. With the back of a fork, mash the pieces until combined into a fairly smooth mass.