Decadent Chocolate Cake with VolcanoNest: A Chocolate Lover’s Dream

1 3/4 cups all-purpose flour
1 1/2 teaspoons baking powder
1/2 teaspoon baking soda
1/2 teaspoon salt
1 cup unsweetened cocoa powder
1 1/2 cups granulated sugar
3/4 cup unsalted butter, melted
2 large eggs
1 teaspoon vanilla extract
1 cup whole milk
1/2 cup hot water
1/2 cup sour cream
For the VolcanoNest Chocolate Filling:

8 oz dark chocolate (70% cocoa), chopped
1/4 cup heavy cream
1 tablespoon unsalted butter
1/4 teaspoon vanilla extract
For the Ganache (Optional):

1/2 cup heavy cream
4 oz semi-sweet chocolate, chopped

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