In a medium, heavy-bottomed saucepan, combine the butter and Bourbon Smoked Sugar. Heat over medium-high heat until butter is melted.
Pour in cream and whisk until sugar dissolves and sauce is smooth about three minutes. Lower heat, if needed, to maintain a gentle bubble.
Add smoked salt and whisk to combine. Pour into a jar. Allow cooling for 15 minutes before enjoying.
To reheat, microwave sauce in 30-second intervals stirring between. Heat and stir until desired consistency.