Salted Chocolate Tart

Name: Salted Chocolate Tart
Prep time: 50 min
Cook time: 1 h
Total time: 1 h 50 min
Cuisine: French
Ingredients: 2 cups plain flour, plus more for dusting; 3 tablespoons sugar; 1/4 teaspoon salt; 3/4 cup (1 1/2 sticks) unsalted butter, cold and cut into small chunks; 1 large egg, separated; 2 tablespoons ice water, plus more if needed; 1 cup double cream; 1/2 cup milk; 10 ounces milk chocolate, chopped; 2 tablespoons sugar; 1/4 teaspoon salt; 2 large eggs, at room temperature