200ml medium or sweet sherry (try using Amontillado or Pedro Ximenez)
150ml thick natural yogurt
150ml vegetable oil
140g plain flour
100g ground almonds
2 tsp baking powder
100g light muscovado sugar
icing sugar, to serve
Tip the raisins into a bowl, pour over the sherry, then leave for at least 30 mins to soften. Meanwhile, heat oven to 180C/ fan 160C/gas 4. Lightly grease a deep 20cm round cake tin, then line the bottom with a circle of greaseproof paper.
Mix together the yogurt, oil and eggs. Put the remaining dry ingredients into a large bowl, pour in the yogurt mixture, then stir together until smooth. Scoop half the raisins out of the sherry, then stir into the batter. Spoon into the prepared tin and smooth the surface with a spoon. Cook in the oven for 50-55 mins until the top springs back when pressed lightly and a skewer inserted into the middle of the cake comes out clean.
Take a skewer and prick all over the cake. Pour over 5 tbsp of the soaking sherry and let it soak in. You can make up to this point 3 days in advance and store in an airtight container. Serve warm or leave to cool, then dust with icing sugar. Warm the rest of the soaked raisins and sherry, then serve alongside the cake with some vanilla ice cream.