Recipes Brown Butter Rum Be the first to rate & review! Use this to make the Martinique Apple Pie cocktail.Plus: Ultimate Cocktail Guide By Eben Freeman and Sam Mason Updated on March 27, 2015 Print Rate It Share Share Tweet Pin Email Yield: 5 ounces Ingredients 4 tablespoons unsalted butter 5 ounces rhum agricole (aromatic West Indian rum) Directions In a small saucepan, cook butter, stirring, until nut-brown. Pour into a heatproof bowl and stir in rhum agricole. Cover and refrigerate overnight. Break the butter layer and pour the rum through a fine strainer into an airtight container. Refrigerate for up to 3 days. Rate it Print