Step 1

Use a big saucepan - at least 2 quarts. This will expand when boiling, and overflows will make a big mess on your stovetop! (I use this 3-quart saucepan that was part of a bigger set I received as a gift. It's my favorite for making anything sweet because the heavy bottom keeps it from heating up too fast.)

Step 2

Combine the cocoa powder, water, sugar and salt in a saucepan over medium heat. Mix with a whisk until smooth.

Step 3

Stir constantly with a whisk or a wooden spoon until it boils.

Step 4

Allow it to boil for 1-2 minutes.

Step 5

Remove from heat.

Step 6

Add vanilla.

Step 7

Syrup will be very thin/watery. Allow to cool completely and it will thicken to about the same consistency as Hershey's syrup.