Position a rack in the lower third of the oven and preheat the oven to 350 degrees (non convection). Grease and flour a 10 to 12 cup bundt pan.
Whisk the flour and baking powder together thoroughly and sift it onto a piece of wax paper. Set aside.
Grate the zest of the orange directly into the bowl of a stand mixer. Add the sugar, salt, oil, and eggs. Beat at high speed with the whisk attachment until the mixture is thick and pale, 3 to 5 minutes.
Stop the mixer and add one-third of the flour mixture. Beat on low speed just until blended, scraping the bowl as necessary. Stop the mixer and add the milk. Beat just until it is blended. Repeat with another third of the flour, followed by the wine, and then the remaining flour. Remove the bowl from the mixer and fold in the chocolate pieces.
Scrape the batter into the pan and tilt to level it. Bake until a cake tester comes out clean, 50-60 minutes. Cool the cake in the pan on a rack for about 15 minutes. Slide a skewer around the tube to release the cake. Turn the cake out on to a rack to cool completely before serving.
My career was sparked by a single bite of a chocolate truffle, made by my Paris landlady in 1972. I returned home to open this country’s first chocolate bakery and dessert shop, Cocolat, and I am often “blamed” for introducing chocolate truffles to America. Today I am the James Beard Foundation and IACP award-winning author of ten cookbooks, teach a chocolate dessert class on Craftsy.com, and work with some of the world’s best chocolate companies. In 2018, I won the IACP Award for Best Food-Focused Column (this one!).