Bánh mì Việt Nam ủ bột cái
For the starter dough: 2/3 cup all-purpose flour (100 grams), 1/3 cup water (100 ml), 2 1/4 teaspoons active dry yeast (7 grams) • For the bánh mì dough: 4 cups all-purpose flour (500 grams), 1 large egg (about 2 oz/55-60 grams), a few drops of vanilla extract, 3/4 teaspoon salt (4 grams), 1 1/2 tablespoons sugar (17 grams), 3/4 to 3/4 cup plus 1 tablespoon ice-cold water (180-190 ml, adjust based on flour absorption), 1 1/2 tablespoons vinegar or lemon juice (20 ml), 2 teaspoons vegetable oil (10 ml)