Butter Sweet Symphony: A Rum Old Fashioned

Recipe: Lauren Rojas , Jac's on Bond , New York City

Photo: Kristen Hubby/@khubbster

December 26, 2025

This rich, nutty cocktail from Jac’s on Bond in New York City features the buttery silkiness of a hot buttered rum but in the form of a Rum Old Fashioned. Banana liqueur adds caramelized sugar notes akin to brûléed fruit while walnut bitters and saline round out the flavors and “keep the drink balanced so it never veers into dessert territory,” says head bartender Lauren Rojas.

Ingredients

1 3/4 oz. brown butter fat washed aged rum
3/4 oz. overproof rum
1/2 oz. creme de banane
3 dashes walnut bitters
2-3 dashes saline solution (1:4 salt to water, or a tiny pinch of salt)

Tools:mixing glass, barspoon, strainer
Glass:rocks

Preparation

Add all of the ingredients to a mixing glass with ice. Stir to chill and strain into the glass over large cube.
Brown Butter Fat Wash RumBrown 7 oz. of unsalted butter until golden and nutty. Keep stirring over medium heat. You should see brown specks building on the bottom eventually after 5-7 minutes. Result should be a brown butter.

Pour the hot butter into the rum blend (24 oz. aged rum and 2 oz. of overproof rum) and stir or shake gently to emulsify.

Steep 4 hours at room temperature. Stir or shake it once mid-infusion (2 hours in) to keep the fat distributed evenly. Freeze 12-16 hours until fat cap solidifies. Break cap and strain twice— once through a fine mesh, once through a coffee filter. That double strain is what prevents oiliness.