This chocolate mocha syrup is dark, rich, and bittersweet, and so easy to make. It's a perfect simple dessert sauce to drizzle over a scoop of ice cream, a brownie sundae, delicate rolled crepes, or a slice of cheesecake.
In the saucepan, bring the water and sugar to a boil, whisking to dissolve the sugar as you heat it.
Add the cocoa powder and salt, whisking until well incorporated and simmer for three minutes. If the cocoa powder is very lumpy, you may want to sift the cocoa powder.
Whisk in the vanilla and instant espresso or coffee powder (or the espresso) and bring the mixture just up to a simmer again, then immediately remove from the heat.
Cover, and let the mixture cool slightly for a few minutes.
If you are storing your syrup in a clean or sterilized canning jar, you can transfer the hot syrup into a preheated jar.
If you are using a plastic squeeze bottle, wait until the syrup is cooled to lukewarm before transferring it to the bottle using a funnel.