Help me make Chocolate Raspberry Zebra Cake.
Here's a recipe for Chocolate Raspberry Zebra Cake:

Ingredients:

Base Batter

• 2 cups flour
• 1 cup sugar
• 1 tablespoon baking powder
• 1 teaspoon salt
• 4 eggs
• 1 cup vegetable oil
• 1 teaspoon vanilla extract
• 1 cup milk

Chocolate Batter

• 1/2 base batter
• 1/4 cup cocoa powder

Raspberry Batter

• 1/2 base batter
• 1/2 cup raspberry jam
• 1 teaspoon raspberry extract, optional
• 1 teaspoon red food coloring, optional

Chocolate Ganache

• 2 cups heavy cream
• 1 1/2 cups chocolate chips

Garnish

• 20 raspberries
• powdered sugar

Instructions:

1. In a large mixing bowl, combine dry ingredients for the base batter (flour, sugar, baking powder, salt).
2. In a second mixing bowl, combine the eggs and vegetable oil.
3. Add the wet mix to the dry mix, stirring constantly until smooth.
4. Preheat oven to 350˚F (180˚C).
5. Add the milk, and vanilla extract, stir until evenly mixed and the consistency is a thick liquid.
6. Evenly divide the batter into two separate bowls. Add the cocoa powder to the first bowl. Mix thoroughly.
7. Add the raspberry jam to other. Mix thoroughly.
8. In a greased 9-inch (23 cm) cake pan, alternate batters by placing 1/4 cup (60 ml) of batter in the center and letting it spread out slightly before adding the other batter (similar to making pancakes). Continue this process until the batter is used up and the pan is full of alternating rings.
9. Bake cake in a preheated oven for 25-35 minutes or until a wooden toothpick inserted into the center of the cake comes out clean.
10. While the cake is baking, to make the ganache; in a medium pot set over low heat, mix together heavy cream and chocolate until chocolate has melted and mixture is smooth.
11. Let mix rest until consistency is thick and mix is cooled.
12. Cool cake slightly, and then invert onto a wire rack to cool completely.
13. Pour ganache over the baked and cooled cake starting in the middle and circling towards the edges coating it all.
14. Once ganache is cooled on cake, garnish with fresh raspberries and powdered sugar.

Enjoy your Chocolate Raspberry Zebra Cake!