Preheat the oven to 180°C, and line two, 6-cup muffin pans or one, 12-cup muffin pan with cupcake liners. Set aside.
In a large mixing bowl, combine the dry ingredients – flour, cocoa powder, baking powder, baking soda and salt, and whisk quickly to mix. Set aside.
1 cup flour, 1/3 cup cocoa powder, ½ teaspoon baking powder, ½ teaspoon baking soda, ¼ teaspoon salt
In a separate, medium mixing bowl, add the wet ingredients – the sugar, vegetable oil, eggs, vanilla and the blood orange zest and juice. Whisk together until thoroughly combined.
¾ cup sugar, 1/3 cup vegetable oil, 2 eggs, 1 teaspoon vanilla extract, 2 tablespoons fresh blood orange zest, 2 tablespoons fresh blood orange juice
Pour half of the wet batter and half of the milk into the dry ingredients, and whisk gently to incorporate before adding the rest of the wet batter and milk. Whisk until just combined – once you can’t see anymore streaks of flour or cocoa powder, stop!
½ cup milk
Pour the batter into the cupcake liners – ½ full for smaller cupcake patty pans and 2/3 full for muffin sized liners. Bake in the preheated oven for 18-20 minutes, or until skewer comes out clean. Let the cupcakes cool completely on a wire rack before frosting.