• 

  Gruyère cheese (可选的) cut in pieces (2 cm)

  50 g

Pastry

• 

  plain flour plus extra for dusting

  150 g
• 

  unsalted butter chilled, diced, plus extra for greasing

  75 g
• 

  fine sea salt

  ½ tsp
• 

  water

  50 g

Filling

• 

  bacon cubes

  200 g
• 

  medium eggs

  4
• 

  milk

  50 g
• 

  crème fraîche

  100 g
  100 g cream
• 

  fine sea salt

  ¼ tsp
• 

  ground black pepper

  2 pinches