Combine the ingredients: Add cocoa powder, maple syrup, water, vanilla extract, and salt to a small saucepan.
Simmer gently: Heat over low heat, whisking continuously, until everything is smooth and the syrup slightly thickens. It should take about 5-7 minutes. Just be careful not to let it boil!
Let cool and thicken: Remove from heat and let the chocolate syrup cool. Don't worry if it seems a little thin when you take it off the stove. As it cools and chills in the fridge, it turns into that thick consistency we're after.
Store and enjoy: Transfer to an airtight jar or container and store in the refrigerator for up to 2 weeks. Use it for chocolate milk, ice cream sundaes, pancakes, waffles, and more!
