Leek Quiche

Pastry

• 300 g plain flour
• ½ tsp fine sea salt
• 150 g butter cold, diced, plus extra for greasing
• 1 egg yolk from large egg
• 50 g water ice cold

Filling

• 200 g Gouda cut in pieces
• 150 g cooked ham cut in pieces
• 200 g double cream
• 4 large eggs
• ¼ tsp ground black pepper
• 1 ½ tsp fine sea salt
• 1 pinch ground nutmeg
• 400 g leeks sliced in rounds (5 mm)