1. 1. Prepare Your Baking Pan: Preheat your oven to 350 F (175 C). Lightly grease and flour a 9×5-inch loaf pan, or line it with parchment paper, leaving an overhang on the longer sides to easily lift the loaf out later. This prevents sticking and makes cleanup a breeze.

2. 2. Combine Wet Ingredients: In a large mixing bowl, whisk together the room temperature sourdough discard, granulated sugar, melted unsalted butter, large eggs, and vanilla extract until the mixture is smooth and well combined. The mixture should look glossy and uniform.

3. 3. Sift Dry Ingredients: In a separate medium bowl, whisk together the unsweetened cocoa powder, all-purpose flour, baking soda, and salt. Sifting helps to break up any lumps in the cocoa and flour, ensuring a smooth batter.

4. 4. Combine Wet and Dry Mixtures: Gradually add the dry ingredient mixture to the wet ingredient mixture, mixing with a spatula or wooden spoon until just combined. Be careful not to overmix; overmixing can lead to a tough loaf. A few streaks of flour are okay.

5. 5. Fold in Chocolate Chips: Gently fold in the chocolate chips until they are evenly distributed throughout the batter. This ensures every slice has pockets of melted chocolate goodness.

6. 6. Transfer to Pan and Bake: Pour the batter into your prepared loaf pan and spread it evenly. Place the pan in the preheated oven and bake for 35-40 minutes.

7. 7. Check for Doneness: The loaf is done when a wooden skewer or toothpick inserted into the center comes out with moist crumbs attached, but not wet batter. The top should look set and slightly cracked. Avoid overbaking, as this can dry out the loaf and reduce its fudginess.

8. 8. Cool Before Slicing: Once baked, remove the loaf from the oven and let it cool in the pan for about 10-15 minutes. This allows it to set up properly. Then, use the parchment paper overhang to lift the loaf out of the pan and transfer it to a wire rack to cool completely before slicing. If you can’t wait, it’s also delicious warm!