Marble Cake

Preheat your oven to 320 °F (160 °C). Lightly grease a loaf pan.

In a bowl, whisk together the flour and salt. In a separate bowl, beat the butter and sugar with an electric mixer until fluffy, then add the vanilla extract. Add the eggs one at a time, mixing well after each. Gradually fold in the flour mixture, beating just until combined.

Divide the batter evenly between two bowls. Stir the cocoa powder into one half until thoroughly incorporated.

Drop spoonfuls of the vanilla and chocolate batters alternately into the prepared pan. Create a marbled effect by swirling the batters gently with a knife, then smooth the top.