METHOD
1. Add eggs and sugar to a bowl and mix until sugar dissolves and mixture becomes foamy. Sift in flour and baking powder and beat until well combined.
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2. Grate lemon zest, add lemon juice and continue beating until the mixture is compact.
3. Pour the mixture onto a baking sheet lined with baking paper, place in the oven and bake at 180°C for 25 minutes.
4. After baking, line the base with baking paper and leave for 10 minutes.
5. Unroll and spread jam with a spoon, covering the entire bun, spread nuts on one side and roll up.
6. Decorate the bun with icing sugar, cut into slices and serve.
