Remove as much of the Mango flesh as you can from the seed pit. Although many sites state that you need to dry the seed out first, I've never been one to have a lot of patience (or time, for that matter). So rather than
Be very careful not to pierce deeply into the pit as you only want to break the seal of the pod, you do NOT want to cut the seed itself.
Using your fingers, slip your thumb in between the pod shell and gently pry it apart, revealing the mango seed nestled safely inside.
Remove the seed from the pod. You may notice a string running from the pod to the seed, this is the seeds "umbilical cord", if you will. You can remove that.
Plant the seed in well drained soil. Some people prefer to germinate the seed first using wet paper towels, but in the past I've noticed this only has a 25% success
It will sprout of it's own accord within a couple weeks.
Mango trees can fruit within 7-10 years and can be grafted once the plant is over a foot tall with 1/4" thick branches, if you want multiple plants faster. They produce well in hot dry areas, but be forewarned a mango tree has the ability to grow 30-100 feet tall, so at some point, you'll need to transplant your baby outside in a warm spot.
You can keep it indoors in a large pot, at least 2 feet deep as mangoes grow taproots, it will still produce fruit even when rootbound, unlike some plants.
Mango Frozen Yogurt