Hot Fudge Sauce I

1 (14 ounce) can sweetened condensed milk

2 (1 ounce) squares unsweetened chocolate, chopped

⅛ teaspoon salt

½ cup water

½ teaspoon vanilla extract

Combine condensed milk, chocolate and salt in top of double boiler over rapidly boiling water. Stir and cook until chocolate melts and mixture thickens, about 10 minutes.

Remove from heat and stir in water, a little at a time, until sauce reaches desired consistency. Cool slightly and stir in vanilla. Serve.