COCONUT MILK

Sprinkle the unflavored gelatin over 1/4 cup of dark rum and allow to soften for 5 minutes.

Meanwhile, stir together 1 1/4 cups of whipping cream, brown sugar, and espresso powder in a saucepan over medium-high heat. Bring to a simmer, stirring until brown sugar has dissolved. Remove from heat, then whisk in gelatin mixture until dissolved.

Whisk in the coconut milk, vanilla extract, and sour cream until smooth. Evenly divide the mixture between eight 3/4 cup custard cups or molds, cover each with plastic wrap, and chill at least 4 hours to overnight.