Ice Cream with Rum Mango Sauce

1 ripe mango, peeled and diced
3/4 cup pineapple juice
2 tablespoons honey
2 tablespoons dark rum or 1/4 teaspoon rum extract
2 tablespoons fresh lime juice
2 teaspoons cornstarch
1 tablespoon water
Grated zest of 1 lime
Vanilla low-fat or non-fat ice cream or ice milk,
    or flavor of your choice

Pur e the diced mango in an electric blender or food processor until smooth. Combine the pur ed mango with the pineapple juice, honey, rum, and lime juice in a small saucepan. Bring to a simmer over moderate heat. Mix the cornstarch and water and add to the mango mixture. Cook over moderate heat, stirring constantly, for 2 to 3 minutes, until the sauce thickens. Add the lime zest and remove from the heat. Serve warm or chilled over ice cream.

Makes about 1 cup, to serve 4 to 6.