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Preheat the oven to 350 F. Spray a 10-12 cup bundt pan thoroughly with baking spray. Be prepared to also spray some mini loaf pans or muffin wells, etc. Set aside.
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Whisk together the sea salt, flour, cocoa powder, baking powder and baking soda. Set aside.
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Cream the butter with an electric mixer (I prefer a stand mixer). Add the sugar in 5 additions, scraping the sides and bottom of the bowl intermittently, beating on medium high speed until light and fluffy, about 5-6 minutes total.
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Add the eggs one at a time, once again scraping the sides and bottom of the bowl intermittently. Beat well to incorporate each one before adding the next.
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Beat in the melted chocolate.
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Beat in the vanilla.
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Fill a 2 cup measuring cup with the milk and red wine. Add the liquid and the four mixture to the bowl, mixing on medium speed, alternating between the two. Begin and end with the flour mixture. I usually break it down to about 3-4 liquid additions and 4-5 dry additions.
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Finish the batter (it will be thick) by folding it by hand to make sure it is completely incorporated. Scrape the batter into the prepared pan/s (see notes above on pan sizes).
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Bake for about 60 minutes for a 10-12 cup pan--obviously for smaller cakes, begin checking earlier, around the 20 minute mark for mini loaves. Let your nose be a guide as to when to check--when the cake is done, it will be pulling away from the sides of the pan and a cake tester inserted into the center of the pan will come out clean.
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Let the cake cool for 5-15 minutes on a cooling rack (5 minutes for mini loaves, 15 minutes for bundt pans). Then invert the cake onto a cooling rack to finish cooling.
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When the cake is cool, dust it with powdered sugar before serving, and serve with lightly sweetened whipped cream.