Karpatka

Pastry cream

• 150 g cornflour
• 100 g caster sugar
• 650 g milk
• 6 eggs
• 2 tsp natural vanilla extract

Choux pastry layers

• 125 g unsalted butter cut into pieces, plus extra to grease
• 130 g plain flour plus extra to dust
• 250 g water
• 1 pinch sea salt
• 2 tsp caster sugar
• 5 eggs

Assembly

• 200 g unsalted butter softened and cut into pieces
• 20 g freshly squeezed lemon juice
• 100 g Advocaat (egg liqueur) (see Tips)
• icing sugar to dust