3 lemons, zest only
1 lemon, zest and juice
3 tbsp apricot jam, warmed in a small saucepan
240²µ/8Β½΄Η³ϊ plain flour
Β½ tsp baking powder
300g/11oz caster sugar
150g/5oz icing sugar
1 pinch salt
80g/3oz unsalted butter, melted
140ml/5fl oz double cream
5 free-range eggs
1Β½ tbsp dark rum