Chop the coconut shell open with a clever, save the juice and shovel the meat and set aside.
Peel and cut bananas in half lengthwise and bring light-salted water to boil, then drop the bananas and cook them halfway or about 1-2 mins. Set the bananas aside, discard the water.
Mix 100% coconut milk and coconut juice 1 cup, and bring on medium-high, don’t let it bubble.
Add sugar and salt stir until melted, then add coconut meat, drop the partially cooked bananas and sesame seeds, let it simmer for 5 mins--no bubbles(coconut milk will lose the silky texture and start separation)
Ladle the dessert in the empty coconut shell and serve warm!