In a 4-cup glass dish, combine the chocolate chips, corn syrup, and butter.

Microwave at 70% power for 1 minute. Stir well.

Then add the sweetened condensed milk, vanilla and salt to the mixture. Blend well and microwave until bubbly (about 1 minute at full power).

Stir and serve over ice cream. Refrigerate remaining sauce in air-tight container. Will keep for several days.