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Ingredients
US|METRIC
4 SERVINGS
- 2 oz. bittersweet chocolate (do not exceed 61% cacao, chopped)
- 2/3 cup unsweetened cocoa powder
- 1 3/4 cups boiling water
- 2 3/4 cups all purpose flour
- 1 1/4 tsp. baking soda
- 1/4 tsp. baking powder
- 1 cup sugar
- 1 cup dark brown sugar (packed)
- 1 1/3 cups mayonnaise (do not use reduced-fat or fat-free)
- 2 large eggs
- 1 tsp. vanilla extract
- 10 oz. bittersweet chocolate (do not exceed 61% cacao, chopped)
- 1 1/2 cups unsalted butter (room temperature)
- 3 cups powdered sugar
- 1 Tbsp. vanilla extract
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