bread flour (about 290 grams) • all-purpose flour (about 290 grams) • unsalted butter, at room temperature (about 100 grams) • whole milk (about 250 ml) • granulated sugar (about 130 grams) • medium eggs, at room temperature • fresh baker's yeast (about 15 grams) • Jam or pastry cream, as desired • milk (about 20 grams) • Powdered sugar,