Prep Time 30 minutes mins
Cook Time 35 minutes mins
Resting Time 2 hours hrs
Total Time 3 hours hrs 5 minutes mins
For the deepest crimson color without thinning the batter, use gel food coloring rather than liquid and adjust slightly depending on brand intensity. Fresh hot coffee enhances chocolate notes without making the cake taste like coffee, but hot water can be substituted. Ensure buttermilk and eggs are at room temperature to prevent the batter from tightening and to encourage a tender crumb. Avoid overmixing once the flour is added to keep the cake soft, and remove the cakes from the oven when a few moist crumbs still cling to the tester. If your kitchen is warm, chill the frosted cake for 15 minutes before slicing for cleaner cuts, and store leftovers covered in the fridge for up to 4 days, letting slices come to room temperature before serving.