75²µ/2½´Ç³ú plain flour (or gluten-free plain flour)
1 tsp baking powder (gluten-free if necessary), alternatively use ¾ tsp if you are not using a food processor
1½ tsp ground cardamom
50²µ/1¾´Ç³ú caster sugar
150²µ/5½´Ç³ú marzipan (white or yellow) or almond paste, at room temperature, torn into lumps
¼ tsp fine sea salt
1 tsp vanilla paste (or extract)
125g/4½oz soft unsalted butter
3 large free-range eggs, at room temperature