Christmas Bread! I wish you a nice Advent!

Leavened white bread.
12-hour leaven baked bread. Beautiful exterior and delicate interior.
I changed so much leaven, that I spelled it with a spoon of flour.
Very nice baked in an earthen vessel.

700 ml of water
6 tablespoons of oil
2 tablespoons vinegar (20%)
6 teaspoons of salt
2 tablespoons powdered sugar
1600 gram flour
40 grams of yeast
In yeast +

Preparation of yeast, 1-2 days before cooking.

yeast:
140 ml of water
150 grams of flour
1 tablespoon oil
½ teaspoon salt
20 grams of yeast