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The amount of coloring will depend on the type that you use. Know that the beet juice will turn the cake more of a sunset hue, and that alone is very romantic! And the type of frosting you use is absolutely your choice OR simply dust the cake with confectioner's sugar!
Course: Dessert
Cuisine: French
Keyword: beet juice, flour, sugar, vanilla, yogurt


  • 8 tablespoons;½ cup; 4ounces;125g unsalted butter
  • 1-1/2 cups;200g all-purpose flour
  • 3/4 teaspoon baking powder
  • Pinch fine sea salt
  • 3 large eggs
  • 1 cup;200g vanilla sugar
  • ½ cup;125ml plain, full-fat yogurt
  • 1 teaspoon best-quality vanilla extract
  • Scant 1/3 cup;75ml fresh beet juice or other red food coloring


  • Butter and flour one 9-1/2 inch (24cm) round cake pan. Preheat the oven to 375 degrees F (190C; gas 5).
  • Melt the butter in a small pan over low heat, remove the heat and cool. Melt the chocolate in a small pan over very low heat, checking and stirring it often. Remove from the heat to cool.
  • Sift together the flour, the baking powder and the salt onto a piece of waxed or parchment paper.
  • In a large bowl, whisk together the eggs and the sugar until they are light and pale yellow. Sprinkle the dry ingredients over the eggs and sugar, whisking to incorporate them as you do. Fold in the yogurt and vanilla, then the melted butter.
  • Pour two-thirds of the batter into the prepared cake pan. Fold the melted chocolate into the remaining one-third of the batter until it is thoroughly combined. Pour the chocolate batter on top of the plain batter that is already in the cake pan and run a rubber scraper through the batter several times to swirl the two batters together
  • Bake the cake in the center of the oven until it is slightly mounded and your finger leaves a very slight impression when you touch the top of it, about 30 minutes.
  • Remove the cake from the oven and let it cool in the pan for about 15 minutes, then turn it out onto a wire cooling rack. Serve when it is fully cool, or the following day. If you like, you may dust the top with powdered sugar.