One day years ago I was in a creperia in Coyocoacan and they served me a crepe with mango jelly. It was delicious. I was surprised when it occurred to me that I had never seen or heard of mango jelly before. It just seemed like a given that it would be available. I mean mango jelly, just think about it. Then I started seeking mango jelly out. Telling anyone who would listen. All the while craving it. After looking in several dozen grocery stores and a few specialty stores I finally found some. It was good but halfway across the state and not cheap. Then the epiphany. I can make it.
1 lbs ripe mango 1 cup sugar 1/2 cup water
Put water and sugar in a sauce pan and boil until it thickens. Mash mango and puree into the thickened boiling sugar water. Boil for five or so more minutes. Pour into a jar.
I didn't let enough water boil off on mine but next time I'll know.