1. Cut the butter into small cubes, mix with the sieved low flour, and knead it into coarse corn flour by hand.
2. Add egg yolk liquid and salt, and mix well.
3. Pour in water evenly, grab the dough and wrap it with plastic wrap, and put it in the refrigerator for 1 hour.
4. Wash the prunes, take out the inner core and slice the pulp; put it into homemade vanilla sugar, stir well and let stand for 15 minutes.
5. Take out the dough, roll it into a 0.2cm thin slice, cut out the round shape with a pie mold, and remove the excess dough.
6. Place the candied prune slices in the center of the tart crust as you like, leaving a side of about 4 cm.
7. Fold the sides inward to secure.
8. Put it in a baking tray, brush with egg mixture, and sprinkle 5 grams of vanilla sugar and a little chopped almonds on the prunes.
9. Put it into the preheated 180 degree oven, the middle layer, about 35 minutes, the tart side will be golden baking color and it will be out of the oven.
