Find a nice, heavy and soft mango. Inside the mango there is a large oval pit. By viewing the shape of the fruit you will be able to tell the location of the pit. Set the mango on a cutting board so the pit is vertical. With your chef's knife cut down the side of the pit and again on the other side of the pit. With the two halves facing each other, take the knife and cut a criss-cross pattern into the meat of the fruit. Make sure you do not press your knife so hard that it cuts through the outside skin. Then simply press from the skin side and reverse the shape. This will expose the freshly cut mango chunks.