Baked cheesecake

Pastry

• 70 g unsalted butter, cut into pieces, plus extra for greasing
• 40 g sugar
• 2 eggs
• 100 g plain flour
• 1 tsp baking powder

Filling

• 250 g sugar
• 1 lemon, zest only, no white pith
• 100 g unsalted butter, softened
• 250 g cream cheese, cut into pieces
• 7 eggs, separated
• 40 g lemon juice
• 1 tsp lemon essence
• 1 tsp natural almond extract
• ¼ tsp fine salt
• 1000 g ricotta cheese
• 70 g cornflour (starch)

Lemon icing

• 100 g icing sugar
• 30 g lemon juice
• fresh blueberries, for garnishing