2/3 cup	granulated sugar
¼ cup	unsweetened cocoa powder
3 ounces	unsalted butter
2/3 cup	heavy cream
1/8 teaspoon	kosher salt
2 teaspoons	instant espresso
3 tablespoons	dark rum
½ teaspoon	vanilla extract

1. Sift together sugar and cocoa.
2. Melt butter.
3. Whisk in cream, sugar, cocoa, and salt.
4. Simmer 5 minutes.
5. Whisk in coffee, rum, and vanilla.