Irish Potato Cake

Mashed potatoes in a chocolate cake? It sounds unlikely, but this old Irish recipe knows exactly what it’s doing. The potatoes add moisture and density without any potato flavor, giving the cake a tight, fudgy crumb that stays fresh for days.

Melted unsweetened chocolate meets a triple hit of warm spices: cloves, nutmeg, and cinnamon. The combination is closer to a spice cake than a straight chocolate cake, with the chocolate adding richness in the background rather than dominating.

Separating the eggs and folding in beaten whites gives the cake a lighter lift that balances all that density from the potatoes and chocolate. Without this step, you’d end up with something closer to a brownie than a cake.

Pro Tips

• Use cold, leftover mashed potatoes. Warm potatoes will melt the butter and throw off the creaming.
• Melt the chocolate gently over a double boiler or in short microwave bursts. Scorched chocolate tastes bitter and gritty.
• Beat the egg whites to soft peaks before folding in. Stiff peaks are harder to incorporate and you’ll deflate more air.
• Grease the bundt pan thoroughly, especially the center tube. Potato cakes stick more than standard batters.

Variations

• Dust the cooled cake with powdered sugar for a simple finish, or drizzle with a chocolate ganache.
• Swap raisins for dried cherries for a chocolate-cherry combination.
• Add a tablespoon of Irish whiskey to the batter for a boozy nod to the cake’s roots.