500g (4 cups) all-purpose flour
60g (1/4 cup) granulated sugar
10g (2 tsp) salt
20g (1 1/2 tbsp) fresh yeast or 7g (1 packet) dry yeast
300ml (1 1/4 cups) milk, lukewarm
60g (1/4 cup) unsalted butter, softened
250g (1 cup) unsalted butter, cold
1 egg, beaten
1 tbsp milk