Mango Conserve

This is a conserve, but not one to store or keep. Prepare it, cool it, and serve it over your best ice cream flavored with double vanilla, ginger, or coconut. The recipe is from Martinique. It is erratic in the way it jells; some types of mangoes jell very well, others only a little. The fresh mixture is good anyhow. Prepare it in the morning, keep it refrigerated, and use it that same night as a perfect topping for vanilla ice cream.