Prep Time 20 minutes mins
Cook Time 50 minutes mins
Resting Time 2 hours hrs
Total Time 3 hours hrs 10 minutes mins
Measure flour by weight or spoon-and-level to avoid a dense cake, and ensure all cold ingredients are at room temperature for a smooth batter. Grease every ridge and the center tube of the Bundt pan thoroughly to prevent sticking; a baking spray with flour works well. Natural cocoa gives a classic red hue, but Dutch-process will deepen the color and flavor; adjust food coloring as needed. If the cake domes, trim the bottom slightly before glazing so it sits flat. The cake keeps moist tightly wrapped at room temperature for 2 days or refrigerated for up to 5 days; bring to room temperature before serving. You can substitute 1 cup milk plus 1 tablespoon vinegar for the buttermilk in a pinch, resting 5 minutes before using.