In a small saucepan, combine the milk, cacao powder, honey, vanilla and a pinch of salt (sometimes I also add a pinch of cinnamon or even cayenne, if I’m feeling racy). Whisk until smooth.
Place the saucepan over medium heat, and bring the milk to a simmer, whisking often. Give the hot chocolate a taste—if you prefer it sweeter whisk in a bit more honey. Serve warm.