This is a cake that belongs in the British baking canon alongside the Christmas fruitcake and the hot cross bun, yet it is often overlooked. A proper Rum and Raisin Cake is not merely a sponge with dried fruit scattered inside. It is a study in patience: the raisins must be drunk long before they meet the oven.
Here is a recipe that respects the process. It yields a tight-crumbed, buttery loaf that is humid with rum and freckled with swollen, wine-dark fruit.
Rum and Raisin Cake
A Loaf Cake for Grown-Ups
Yield: One 9×5 inch loaf
Total time: 20 minutes active + overnight soaking + 1 hour bake
The Gospel of Soaking
Do not skip the overnight soak. If you add dry raisins to the batter, they will suck moisture out of the cake during baking, leaving you with a dry crumb and shriveled, charcoal-flavored bullets.
The raisins must be plump. They must burst when you bite them.
Ingredients
For the Drunken Raisins:
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1 ½ cups (225g) raisins (golden sultanas are best; they look prettier and soak more evenly)
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¾ cup (180ml) dark rum (do not use white rum; it lacks the molasses note)
For the Cake:
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1 ¾ cups (220g) all-purpose flour
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1 tsp baking powder
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½ tsp baking soda
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½ tsp salt
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1 tsp ground cinnamon (optional, but it marries beautifully with rum)
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½ cup (115g) unsalted butter, softened
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1 cup (200g) dark brown sugar, packed
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2 large eggs, room temperature
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1 tsp vanilla extract
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½ cup (120ml) buttermilk (or whole milk + 1 tsp lemon juice, rested 10 min)
For the Rum Syrup Glaze (Essential):
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3 tbsp reserved rum from the raisins
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2 tbsp unsalted butter
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2 tbsp dark brown sugar
Method
1. The Night Before
Warm the ¾ cup of rum slightly (10 seconds in the microwave) – this opens the pores of the raisins. Pour it over the raisins in a small bowl. Cover and let sit at room temperature overnight.
By morning: The raisins will have absorbed most of the liquid. Drain them, but reserve the leftover rum. You will need 3 tablespoons of it for the glaze.
2. The Cake
Preheat your oven to 325°F (160°C) . Butter and flour a 9×5 loaf pan, or line it with parchment.
In a medium bowl, whisk together the flour, baking powder, baking soda, salt, and cinnamon.
In a large bowl, beat the softened butter and dark brown sugar until light and fluffy (about 3 minutes). Scrape the bowl.
Add the eggs one at a time, beating well after each. Add the vanilla.
The Dry/Wet Dance:
Add half the flour mixture to the butter mixture, mix gently. Add all the buttermilk, mix. Add the remaining flour. Stop mixing as soon as the flour disappears. Overmixing yields a tough, tunneled cake.
The Final Fold:
Dredge the rum-soaked raisins in 1 tablespoon of flour (this stops them sinking to the bottom). Fold them into the batter with a spatula.
Pour the batter into the prepared pan and smooth the top.
3. The Bake
Bake for 55–65 minutes. The top should be deep golden and a skewer inserted in the center should come out clean (or with a few moist crumbs).
Critical step: While the cake bakes, make the syrup.
4. The Rum Syrup Glaze
In a small saucepan, combine the 3 tablespoons reserved rum, 2 tbsp butter, and 2 tbsp brown sugar. Heat gently until the butter melts and the sugar dissolves. Do not boil vigorously; you just want it emulsified.
5. The Drunkard’s Finish
When the cake comes out of the oven, let it rest in the pan for 5 minutes only. Then, while it is still hot, poke the top all over with a skewer or toothpick (at least 20 holes).
Brush the hot syrup over the hot cake. All of it. Slowly. Let it pool and sink in. This is not a drizzle; it is an absorption.
Let the cake cool completely in the pan. The syrup will create a thin, crackly, rum-scented crust.
The Waiting (Optional but Recommended)
This cake is good the next day. It is excellent three days later.
Wrap the cooled cake tightly in parchment and then foil. The rum will continue to migrate through the crumb, and the raisins will relax into the surrounding sponge. Serve at room temperature with unsalted butter or a dollop of clotted cream.
Three Critical Notes
1. On Sinking Fruit:
If your raisins sink, one of three things happened: the batter was too thin (did you measure correctly?), the raisins were too wet (did you drain them thoroughly?), or you did not flour them. Flour is the anchor.
2. On Rum Selection:
Do not use spiced rum. The vanilla and cinnamon in spiced rum will clash with the clean, fermented bite of the alcohol. Use a classic dark rum like Myers’s or Gosling’s.
3. On Boozy Intensity:
If you want a stronger rum presence, do not add more rum to the batter (it will break the emulsion). Instead, increase the rum in the soaking liquid and the glaze. You can also brush the baked, cooled cake with an additional tablespoon of rum before wrapping it for storage.
This cake is proof that dried fruit deserves more than Christmas. It is a loaf of quiet sophistication—buttered, boozy, and beautiful in its restraint.