1 tsp lemon juice
100²µ/3½´Ç³ú caster sugar
2 tsp cornflour
100²µ/3½´Ç³ú light muscovado sugar
good pinch of flaky sea salt
1 tsp vanilla bean paste
150g/5½oz digestives (or ginger snaps), crushed
40g/1½oz unsalted butter, plus extra for greasing
50g/1¾oz unsalted butter
550g/1lb 4oz full-fat cream cheese
200g/7oz soured cream (or crème fraîche)
125ml/4fl oz double cream
4 medium free-range eggs, lightly beaten