How to make
Sift the flour into a bowl and add the sugar, vanilla sugar, salt and butter cubes - cold and hard.
With a special metal device for butter dough with a fork or, in extreme cases, with your fingers, rub the butter with the flour until crumbs are obtained.
Pour the water and wine (also cold), in portions, while continuing to rub and knead until a smooth dough is obtained.
It is best to knead it on a floured surface until it becomes slightly elastic (it cannot be very elastic because it is buttery). Form it into a ball, wrap it in cling film and refrigerate it for 40 minutes to 1 hour.
During this time, wash and strain the blueberries well. Add sugar, breadcrumbs, starch, vanilla sugar and cinnamon, if desired. Stir and leave it until the dough is firm. Prepare a baking pan with a removable bottom and a diameter of 11″ (28 cm).
Cut the firm dough into 2 parts - one slightly larger than the other. Roll out the smaller half onto a floured surface into a round crust, about 1.2″ (3 cm) larger than the diameter of the baking pan. This way we will be able to fold along the edges.
Place the crust on the bottom and fold the excess. Spread with blueberry jam and pour the fresh candied fruit. Put pieces of butter (25 grams) on them.
Roll out the other half of the dough into a thin crust, while not forgetting to flour the work surface again, so that the dough does not stick to it.
Cut 10-12 strips from it and place them on the blueberries in the form of a grid. If you have leftover dough, make long, thin, twisted strips to decorate the edges of the tart.
Beat the yolk with 1 tsp. of oil and 1 tsp. of water and smear the surface of the grid. Sprinkle it with sugar and bake it in a preheated oven at 360°F (180 degrees) for about 40 minutes or until a golden brown color is obtained.
Allow it to cool before removing from the baking pan.
A tart, that is fresh, unobtrusive and not too sweet, which is ideal for dessert after a hearty meal. The lovers of sweeter things can add more sugar.
The fresh blueberry tart is ready.
