½ lemon, zest only
1 large can pineapple rings (8 rings), drained
150²µ/5¼´Ç³ú plain flour
2 tsp baking powder
125²µ/4½´Ç³ú caster sugar
2 tsp vanilla sugar (make your own by placing a split vanilla pod in some caster sugar)
50²µ/1¾´Ç³ú butter, melted
2 free-range eggs
75ml/2½fl oz milk
3 tbsp good-quality dark rum