How-to Dice a Mango
Wash fruit. Lay fruit on the counter, then turn so the top and bottom are now the sides. Using a sharp knife, make a lengthwise cut as close to the long, flat seed as possible to remove each side of the fruit. Trim fruit away from the seed.
Score each side of the fruit lengthwise and widthwise, being careful not to cut through the skin.
Using your hand, push the skin up, turning the fruit out. Cut fruit off at the skin with a knife.