Making a Buttered Rum Cocktail is a straightforward process. Just follow these easy steps:

1. Heat Ingredients: In a small saucepan, combine the water, unsalted butter, brown sugar, ground cinnamon, and ground nutmeg. Heat over medium heat until the butter melts and the mixture is warm, stirring occasionally.

2. Combine with Rum: Once the butter mixture is well combined, remove it from the heat. Add the dark rum and stir well to blend.

3. Serve in a Mug: Pour the warm mixture into a heat-resistant mug or glass, leaving some space at the top for whipped cream.

4. Add Whipped Cream: Top with a generous dollop of whipped cream for added creaminess.

5. Garnish: Sprinkle additional ground nutmeg on top of the whipped cream for an elegant finish.

6. Enjoy: Sip slowly and enjoy the warm, comforting flavors of your Buttered Rum Cocktail!

These simple steps will guide you to create this delicious cocktail in no time!