5 tbsp groundnut oil (or veg oil), plus extra for greasing
grated zest 2 lemons, plus 2 tbsp fresh lemon juice
2 eggs and 2 eggs whites
400g caster sugar
2 sprigs fresh rosemary or 1 tsp dried
fresh raspberries, natural yogurt and rosemary sprigs to serve
Method
Heat oven to 180oC/fan 160oC/gas 4.
Sift the polenta, flour, baking powder and salt into a bowl.
Mix together yogurt, oil, lemon zest and juice into a jug.
Beat the eggs and egg whites with half the sugar until creamy. Beat into the yogurt mixture until smooth and then fold into the dry ingredients.
Pour the batter into a 1.2 litre, lightly oiled, and lined loaf tin. Bake for 40-45 minutes or until a skewer comes out clean.
Put the remaining sugar in a pan with 200ml of water and the rosemary. Bring to the boil and simmer for 10 minutes. Cool completely and strain.
Cool the cake on a rack for 15 mins. Prick the top all over and drizzle over half of the rosemary syrup. Serve with the rosemary sprigs, raspberries, yogurt and extra syrup.