To start, bloom your yeast. Mix your active dry yeast, sugar, and warm milk together and let sit for 10 minutes until foamy on top.
1 1/4 cups (300 ml) whole milk, warmed to about 110 ℉ (43 ℃), 2 1/4 tsp active dry yeast, 1 tsp granulated white sugar (to bloom the yeast)
Add the Earl Grey tea to a small food processor, or spice grinder, and pulse until finely ground. Pass through a sieve to separate any large bits. (If you prefer, you can grind the Earl Grey tea used in the filling at the same time and just separate half out. 3 tbsp (12 g) loose leaf Earl Grey tea
In a large bowl of a stand mixer with a whisk attachment, mix flour, salt, sugar and the finely ground Earl Grey tea together.
4 3/4 cups (593 g) all-purpose flour, spooned and leveled, 1 1/2 tsp salt, 2 tbsp (25 g) granulated white sugar
To the dry ingredients add the whisked eggs, vanilla, and softened butter. Then mix together.
2 eggs, whisked, 1 tbsp vanilla bean paste, 1/2 cup (112 g) unsalted butter, very softened
Add in the yeast mixture and mix until everything is blended. Switch to a dough hook and knead on medium speed for 7-10 minutes until the dough pulls away from the edges of the bowl, forms a ball and springs back when pressed.(If the dough is still looking very sticky halfway through, add 1 tbsp (8 g) of flour at a time until it pulls away from the sides of the bowl.) Form the dough into a ball. Place the dough in a large, greased bowl. Cover with plastic wrap or a kitchen towel and place in a warm place to rise, (outside or a cold oven with the light on works well for this), for 1- 1 ½ hours, or until the dough doubles in size.