Preheat the Oven:
Begin by preheating your oven to 350°F (175°C). Grease and flour a 9×5-inch loaf pan to ensure that your cake will come out easily.
Combine Dry Ingredients:
In a large mixing bowl, whisk together the all-purpose flour, white sugar, brown sugar, salt, baking powder, baking soda, and cocoa powder. Make sure all your dry ingredients are well mixed to avoid lumps.
Mix the Wet Ingredients:
In another bowl, beat the eggs and then add the vegetable oil, buttermilk, vanilla extract, and instant coffee. Mix until the ingredients are combined smoothly.
Combine Wet and Dry Mixes:
Pour the wet mixture into the bowl of dry ingredients. Stir gently until just combined; avoid overmixing. The batter will be quite thick at this point.
Add Hot Water:
Carefully stir in the hot water until the batter is smooth. (The batter will be quite thin, but that’s normal!) This step is key to achieving a moist texture.
Pour Batter into Pan:
