- Preheat the oven.  Preheat the oven to 350°F (175°C) and line the muffin pans with cupcake liners.  This recipe yields 24 very full cupcakes or 26 smaller ones. 
- Mix the wet ingredients. Combine the vegetable oil and white sugar in a large mixing bowl. Then, beat well until fully combined and creamy.  Next, add the sourdough starter discard and gently mix it into the batter.  Add the eggs one at a time, beating well after each addition.  Stir in the vanilla extract. 
- Add the carrots, pineapple, and raisins. Reduce your mixer speed to low and gently fold in the grated carrots, drained pineapple, and golden raisins until evenly distributed throughout the batter. 
- Prepare the dry ingredients.  In a separate large bowl, whisk together the flour, cinnamon, allspice, salt, and baking soda.  Gradually add the dry ingredients to the wet ingredients 1 cup at a time, mixing gently after each addition until just combined.  Be careful not to overmix. 
- Fill and bake.  Divide the batter evenly among the prepared cupcake liners. Fill to about ⅔ full. Bake for 25 minutes, or until the tops are lightly bouncy when pressed. 
- Cool the cupcakes. Cool in the pan for a few minutes before moving them to a wire rack to cool completely before frosting.