Ingredients
Détrempe
3 ½ (525 g) cup all-purpose flour
1 cup (250 ml) water, room temperature
½ cup (125 ml) 2% milk, room temperature
5 Tbsp (62 g) sugar
1 pkg (2 1/4 tsp/8 g) instant dry yeast
1 ¼ tsp salt
2 Tbsp (30 g) unsalted butter, at room temperature
Beurrage
1 ¼ (285 g) cup unsalted butter, at room temperature
1 egg whisked with 2 Tbsp of water, for brushing
https://www.youtube.com/watch?v=K689erbK3XI&ab_channel=OhYumwithAnnaOlson