Reprinted with permission from Chocolate is Forever by Maida Heatter, copyright © 2020. Published by Voracious, an imprint of Little, Brown Books.

Adjust rack one-third up from the bottom of the oven and preheat oven to 350 degrees. You will need a loaf pan measuring about 8½ x 4½ x 2¾ inches, or one with about a 6-cup capacity. Butter the pan and dust it all over lightly with fine, dry breadcrumbs, shake out excess crumbs, and set the pan aside.

Sift together the flour, baking powder, salt, cocoa and sugar and set aside. Beat the cream and vanilla in the small bowl of an electric mixer until the cream holds a definite shape. On low speed, add the eggs, one at a time, scraping the bowl with a rubber spatula and beating only until the egg is incorporated after each addition. (The eggs will thin the cream slightly.)

Transfer to the large bowl of the mixer and gradually, on low speed, add the sifted dry ingredients, scraping the bowl and beating only until smooth. Remove from the mixer and stir in the grated zest. That’s all there is to it.

Turn the batter into the prepared pan and smooth the top. Bake for about 1 hour and 5 minutes, until the top springs back when lightly pressed with a fingertip.

For the Glaze: As soon as the cake goes into the oven, mix the orange juice with the sugar and let it stand while the cake is baking. After you remove the cake from the oven, let it cool for 5 minutes. Then, a little at a time, brush the orange juice–sugar mixture all over the cake; encourage most of it to run down the sides between the cake and the pan, but thoroughly wet the top also. The cake will absorb it all.

Let the cake stand in the pan until it is completely cool. Then cover the pan loosely with a piece of wax paper. Invert the cake into the palm of your hand – easy does it – remove the pan, cover the cake with a rack, and invert again, leaving the cake right side up. Serve cold or at room temperature. (I like it cold.)