1Sift together 2 cups cake flour, 2 tsp baking soda, and 1/2 tsp salt.
2Add 2/3 cup cocoa powder and sift again.
3In a separate bowl, combine 12/3 cups sugar, 2 eggs, 1 cup buttermilk, and 1 cup vegetable oil.
4Mix until combined.
5In a separate bowl, mix together 1 cup boiling water, 1 tsp instant coffee, and 1/2 tsp vanilla extract.
6Pour the coffee mixture into the batter and mix until combined.
7Pour batter into two 12cm x 22cm loaf pans lined with baking paper.
8Bake at 140 degrees celsius convection oven for 60 minutes.
9Prepare the cream cheese buttercream by combining 80 g cream cheese, 70 g unsalted butter, 145 g icing sugar, 1/2 tsp vanilla extract, and 1/4 tbsp lemon juice.
10Beat until smooth and creamy.
11Frost the cooled cakes with the cream cheese buttercream.