Portuguese Egg Tarts with Laminated Puff Pastry

Name: Portuguese Egg Tarts with Laminated Puff Pastry
Total time: 3 h
Yield: 12 servings
Ingredients: 60 g unsalted butter (for the dough); 150 g all-purpose flour; 2 g salt; 3 g sugar (for the dough); 60 ml water; 80 g unsalted butter (for laminating); 20 g whole egg; 2 egg yolk; 45 g sugar (for the custard); 150 ml whipping cream; 75 ml milk