Ingredients:
- 2 ¼ cups All-Purpose Flour, sifted
- 3 cups Granulated Sugar (total for cake and frosting)
- ¾ cup Unsweetened Cocoa Powder (Natural)
- 1 teaspoon Baking Soda
- 1 ½ teaspoons Fine Sea Salt (total for cake and frosting)
- 1 ½ cups Unsalted Butter (total for cake and frosting)
- 6 Large Eggs, separated (yolks reserved for frosting/cake)
- 1 cup Full-fat Buttermilk
- 3 teaspoons Vanilla Extract (total for cake and frosting)
- 1 cup Hot Coffee (or hot water), strongly brewed
- 1 cup Evaporated Milk (Not sweetened condensed milk)
- 1 ½ cups Shredded Sweetened Coconut
- 1 cup Pecans, chopped, lightly toasted if desired
Instructions:
- Preheat oven to 350°F (175°C). Grease, line with parchment, and lightly flour three 9-inch cake pans. Sift together the flour, cocoa powder, baking soda, and the cake's salt; set aside.
- Cream the softened butter (1 cup) and 2 cups of sugar until light and fluffy. Add 2 whole eggs and 2 egg yolks one at a time, mixing well. Mix in buttermilk (1 cup) and 2 teaspoons of vanilla extract. Gradually add the dry ingredients until just combined.
- Carefully pour the hot coffee into the batter and mix until smooth. Divide the thin batter evenly among the three tins. Bake for 30–35 minutes until a toothpick comes out clean. Cool in tins for 10 minutes before inverting onto wire racks to cool completely (at least 1.5 hours).
- Prepare the Custard Frosting: In a heavy-bottomed saucepan, whisk together the evaporated milk, remaining 1 cup of sugar, 4 egg yolks, and the remaining ½ teaspoon of salt.
- Cook the custard over medium-low heat, stirring constantly, until the mixture thickens significantly, coating the back of a spoon (about 10–15 minutes). Do not let it boil vigorously.
- Remove from heat. Stir in the remaining ½ cup of cubed butter until melted, then add the remaining 1 teaspoon of vanilla extract. Transfer the mixture to a bowl and let it cool slightly (about 15 minutes) before stirring in the shredded coconut and chopped pecans. Allow the frosting to cool to room temperature until thick and spreadable.
- Assembly: Level the cake layers if necessary. Place the first layer on a serving plate and spread one-third of the coconut-pecan frosting over it. Stack the second layer and repeat with another third of the frosting.
- Place the final cake layer on top and spoon the remaining frosting mixture evenly over the top layer only, leaving the sides traditionally bare.