MICROWAVE DIRECTIONS: place chocolate and sweetened condensed milk into the bottom of a microwave safe bowl. Microwave in 30 second bursts, stirring after each interval. Once the chocolate is mostly melted, keep stirring until its completely melted. Whisk in corn syrup, salt and milk until you get the desired consistency you want. If using cold milk, you may want to microwave again for another 30 seconds to warm it up again. Finish by stirring in vanilla. Serve or store as desired.