Hershey's Chocolate Syrup

1/2 cup Hershey's Cocoa
1 cup granulated sugar
1 cup water
1 teaspoon vanilla extract
Dash of salt

Combine cocoa, sugar and salt in a saucepan. Add water, and mix until smooth. Bring this mixture to a boil. Allow it to boil for one minute, being careful that it does not boil over. Remove from heat and let cool. When cool, add vanilla extract.