Moist Chocolate Cake Frosting (Print Version)

# Ingredients:

→ Chocolate Cake Batter

01 - 270 g cake flour
02 - 300 g granulated sugar
03 - 110 g dark brown sugar, packed
04 - 8 g baking powder
05 - 4 g baking soda
06 - 5 g fine sea salt
07 - 90 g unsalted butter, cubed, room temperature
08 - 240 g sour cream, room temperature
09 - 120 ml whole milk, room temperature
10 - 2 large eggs, room temperature
11 - 60 ml vegetable oil
12 - 7 ml vanilla extract
13 - 240 ml freshly brewed hot coffee
14 - 65 g unsweetened dark cocoa powder
15 - 1 batch chocolate fudge frosting

→ Cake Soak

16 - 75 ml water
17 - 15 g unsweetened cocoa powder
18 - 32 g granulated sugar
19 - 5 ml vanilla extract

# Instructions:

01 - If preparing homemade chocolate fudge frosting, make it ahead to allow it to set before using.
02 - Preheat oven to 180°C. Line the bases of two 20-cm round cake pans with parchment paper and set aside.
03 - In a stand mixer bowl, blend cake flour, granulated sugar, dark brown sugar, baking powder, baking soda, and salt. Add cubed unsalted butter and mix on low speed until mixture resembles coarse sand, approximately 3 minutes.
04 - In a separate bowl with a spout, whisk together sour cream, whole milk, eggs, vegetable oil, and vanilla extract. In another bowl, whisk hot coffee with cocoa powder until smooth. Gradually add the first wet mixture to the dry ingredients, then immediately add the coffee-cocoa mixture. Mix until just combined, scraping down bowl sides as needed.
05 - Divide the chocolate batter evenly between prepared cake pans, roughly 740 g per pan. Bake for 30–35 minutes or until a toothpick inserted in the center yields a few moist crumbs.
06 - Place cake pans on a wire rack and cool for 20 minutes. Run an offset spatula around edges to loosen, invert layers onto the rack, and let cool completely before assembling.
07 - In a small saucepan, combine water, unsweetened cocoa powder, granulated sugar, and vanilla extract. Cook over medium heat until boiling, reduce to low, and simmer for 2–3 minutes until thickened. Set aside to cool.
08 - Carefully trim the tops of cooled cake layers. Use a pastry brush to apply chocolate soak evenly over the surface of each layer.
09 - Layer cakes with chocolate fudge frosting and finish with additional frosting on top and sides. Optionally, garnish with chocolate shavings.

# Notes:

01 - For accurate ingredient measurement, use a digital kitchen scale and the spoon-and-level technique for dry items.
02 - The batter can be baked in various pan sizes; adjust baking time as needed based on pan dimensions.
03 - Store cake covered and refrigerated for up to 5 days to maintain freshness and moisture.
04 - Individual slices may be frozen, wrapped tightly, for up to 1 month.