In a large mixing bowl, combine the Nestlé MILKMAID condensed milk, the freshly pureed ripe mangoes, and the fresh cream. Whisk the mixture vigorously until it thickens slightly and becomes smooth and luscious.
Transfer the mixture into a shallow, freezer-safe container and place it in the freezer. Allow it to chill until it is half-set, which will take a few hours depending on your freezer temperature. Once semi-frozen, remove it from the freezer and whisk again to break up any ice crystals, ensuring a softer, creamier texture when fully frozen.
After whisking, return the ice cream mixture to the freezer. Let it freeze completely until firm and scoopable. Serve the chilled mango ice cream on its own or with fresh mango slices for an extra burst of fruity goodness.