Combine coconut milk, sugar, and salt in medium saucepan and bring to gentle boil over medium-high heat. Cook, stirring often, until sugar dissolves and mixture is smooth (1-2 mins.). Transfer to bowl, cool to room temp, and then cover and chill until very cold. Transfer to bowl of ice-cream maker and freeze according to manufacturer's directions. Serve at once, or transfer to airtight container and freeze for up to 2 weeks.