Sorghum Stack Cake

Appalachian mountain celebration cake: six thin sorghum-molasses gingerbread layers stacked with a filling of slow-cooked dried apple sauce, assembled a day ahead so the layers soften and meld together

Origin: Appalachian Mountains, eastern Kentucky, Tennessee, and southwestern Virginia, United States

From the journey of Sorghum.

The Appalachian sorghum stack cake is one of the most distinctively American preparations in the entire culinary record, and one of the most historically layered: a mountain wedding and celebration cake whose origins trace back to the three great convergences of Appalachian food culture. The first is the West African introduction of sorghum to the American South through the Middle Passage and the enslaved agricultural knowledge that made sweet sorghum cultivation viable in the Carolina and Virginia uplands. The second is the Appalachian tradition of drying apples in late autumn, threading the slices on string and hanging them from cabin rafters or spreading them on tin roofs in the sun, producing the intensely flavoured, tangy dried apple slices that when slow-cooked with spices become the most distinctive sweet filling in mountain cooking. The third is the sorghum syrup industry that dominated Appalachian and Upper South sweetener production from roughly 1865 to 1920, when virtually every farm family in Kentucky, Tennessee, and the Carolinas pressed sweet sorghum stalks in horse-drawn mills each autumn and boiled the juice to dark, smoky syrup in long open pans over wood fires. The sorghum stack cake was the traditional mountain wedding cake, and it was assembled communally: each guest or family who attended the wedding brought one baked layer (a thin, crisp sorghum gingerbread round), and the bride's family prepared the dried apple filling. The assembled cake, with its height of six to twelve layers, was said to measure the bride's popularity; a tall stack was a public declaration of a beloved woman's community standing. The cake was never eaten on the day of assembly; it was wrapped and left overnight for the apple filling's moisture to penetrate the dry cake layers, transforming them from crisp gingerbread into a yielding, spiced, fragrant mass that slices cleanly and has a flavour unlike any other American cake: deep, dark, molasses-bitter, apple-sour, ginger-warm, and unmistakably mountain.

Ingredients

Cake layers

  • 340 g plain (all-purpose) flour
  • 120 g sorghum syrup (sorghum molasses; available online or at Southern American food shops)
  • 115 g unsalted butter, softened
  • 100 g dark brown sugar
  • 1 large egg
  • 120 ml buttermilk
  • 1 tsp bicarbonate of soda
  • 1.5 tsp ground ginger
  • 1 tsp ground cinnamon
  • 0.5 tsp ground allspice
  • 0.25 tsp ground cloves
  • 0.5 tsp fine salt

Apple filling

  • 300 g dried apple slices (or apple rings), preferably unsulphured
  • 500 ml water (for rehydrating the apples)
  • 80 g dark brown sugar or muscovado sugar
  • 1 tsp ground cinnamon
  • 0.5 tsp ground ginger
  • 0.25 tsp ground allspice

Method

  1. Prepare the apple filling first (it can be made 2–3 days ahead): place the dried apple slices in a pot with the water. Bring to the boil, reduce the heat, and simmer for 20–25 minutes until the apples are fully rehydrated and very soft. Add more water if the pot becomes dry. Remove from the heat and mash or purée the apples with a fork or stick blender to a thick, spreadable sauce. Stir in the sugar, cinnamon, ginger, and allspice. Taste: it should be sharp, spiced, and robustly apple-flavoured. Allow to cool completely.
  2. For the cake layers: preheat the oven to 180°C (160°C fan). Grease and flour a 22cm (9-inch) round cake tin. In a large bowl, beat the butter and brown sugar until pale. Beat in the sorghum syrup, then the egg. Stir in the buttermilk.
  3. In a separate bowl, whisk together the flour, bicarbonate of soda, ginger, cinnamon, allspice, cloves, and salt. Add the dry ingredients to the butter mixture in two additions, stirring until a soft, sticky dough forms. Do not overmix.
  4. Divide the dough into 6 equal portions. Press one portion evenly into the prepared cake tin (it should be 5–6mm thick). Bake for 8–10 minutes until just firm at the edges and dry to the touch in the centre; the layers should not colour much. They will feel dry and crisp when cool: this is correct. Cool completely on a wire rack before stacking.
  5. To assemble: place one cooled cake layer on a plate or cake stand. Spread a generous layer of apple filling (approximately 4–5 tablespoons) evenly to the edges. Place the next layer directly on top, pressing gently to adhere. Repeat with the remaining layers and filling, finishing with a plain cake layer on top. Spread any remaining filling thinly over the sides if desired.
  6. Wrap the assembled cake in cling film and leave at room temperature for at least 12 hours, preferably overnight. During this time, the filling's moisture will penetrate the cake layers, softening them from crisp gingerbread into a tender, unified cake that slices cleanly.
  7. Slice with a sharp, thin knife and serve at room temperature. A dusting of icing sugar on top is traditional in some families; powdered sugar (caster sugar pulsed to fine powder) works equally well.

Notes

Sorghum syrup has a distinctive flavour: darker and more robustly bitter-sweet than cane molasses, with a smoky, caramel depth that is unlike any other sweetener. It is not directly interchangeable with blackstrap molasses (too bitter) or golden syrup (too mild); the nearest substitute is a blend of two parts dark treacle to one part golden syrup, though the result will be a slightly different character. Sorghum syrup is available from specialty American food suppliers and online. The traditional recipe uses six layers; some family versions use eight or twelve, assembled over multiple sittings. The taller the stack, the more dramatically the finished cake presents when sliced. Store any leftovers wrapped at room temperature; the cake improves over 2–3 days as the layers continue to absorb the filling.

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