@ChristinaO Maple syrup would work with a very mild-tasting #rum (ie. Havana Club 7). There's even a recipe using burnt sugar on the internet.
Brown sugar would be OK, but Demerara is usually the go-to for Hot Buttered Rum. The spices I add are optional, depending on the flavor profile of the rum.
Here's where I took my ideas from: https://youtu.be/t9wNGIgN_f8
@ChristinaO For what it's worth, Chris McMillan, from that YouTube video, is a very well-respected bartender, mixologist, & #cocktail historian.
@SlowRain I would tend to trust a New Orleans bartender's expertise, yes.
@SlowRain I don't think I've had Hot Buttered Rum. Where does one get Black Sugar? Would molasses, brown sugar or maple syrup do?