In a medium saucepan, combine the heavy cream, light brown sugar, cinnamon, nutmeg, ginger, allspice, butter, and molasses. Heat over medium-high heat, stirring continuously, until the butter and sugar have melted and the mixture is smooth.
Gradually add the water, stirring constantly, until the mixture has reached a slow boil.
Reduce the heat to low and simmer for 5-7 minutes, stirring occasionally.
Remove the pan from the heat and strain the mixture through a fine-mesh sieve into a large bowl or pitcher.
Divide the mixture into four mugs and serve hot.
Interesting Facts
Butterbeer is a popular beverage from the Harry Potter series that has been made into many variations, including hot and cold versions.
This particular version is made with a blend of spices, butter, molasses, and cream, for a creamy and rich flavor.
It's a great wintertime beverage for adults and kids alike!