INGREDIENTS
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FOR THE CAKE
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1 teaspoon cinnamon
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1 teaspoon nutmeg
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1 teaspoon salt
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2 teaspoons baking powder
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2 teaspoons baking soda
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3/4 cup cocoa powder
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2 cups sugar
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2 cups flour
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1/2 cup buttermilk
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1/2 cup heavy cream
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1/2 cup canola oil
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2 eggs
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1 teaspoon vanilla (extracted from pod)
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2 teaspoons rum
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1 cup hot water
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2 teaspoons instant espresso powder
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FOR THE CARAMEL
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splash vanilla extract
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1 teaspoon fleur de sel
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1/4 cup butter
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1/2 cup heavy cream (plus 2 tablespoons)
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1 cup sugar