Homemade chocolate syrup

My kids aren't big milk fans, but they will drink chocolate milk. However, I got tired of putting chocolate syrup with less than pure ingredients into good healthy milk.
Here is the recipe I use:
3/4 c cocoa powder
1 1/2 c sugar
Pinch of salt
1 c water
1 tsp vanilla extract
Mix all ingredients in a sauce pan till boiling let it cooks for about a minute turn it off and mix in vanilla.

I store mine in old glass pasta sauce jars ( I always save these). This recipe almost fills up the jar and lasts for months. Voila simple tasty chocolate syrup with only a few ingredients!