For the apples
2.7kg (6 lb) crisp eating apples, such as Cox’s or Braeburn
190g (6¾ oz) caster sugar
20g (¾ oz) ground cinnamon
squeeze of lemon juice
For the cake
180g (6¼ oz) unsalted butter
225g (8 oz) vanilla caster sugar
270g (9½ oz)/5½ whole eggs, beaten
255g (9 oz) plain flour
4g (⅛ oz) sea salt
10g (¼ oz) ground cinnamon
100g (3½ oz) caster sugar