Whisk together the warm water, milk, yeast and sugar; set aside. Beat the egg in a separate bowl.
Add the flours, salt, and butter to the bowl of a stand mixer. Using the paddle attachment, mix the ingredients until the butter is the size of crumbs.

Add the yeast mixture and the beaten egg. Run the mixer on medium-low until a dough forms, about 5-8 minutes.Scrape down the sides of the bowl if necessary, and shape the dough into a ball. It will be sticky. Cover bowl with a damp kitchen towel and let the dough rise until it has doubled is size.

Line a baking sheet with parchment paper. divide the dough into 8 equal pieces.

To shape the dough into balls, gently flatten each piece like a pancake. Gather the ends and pinch the dough to seal in the center. Flip the dough over, cup the surface with your palm, and roll into a ball. Transfer to your baking sheet, placing them a few inches apart. Cover and rest for 1-2 hours, or until puffy and slightly risen.

To make the egg wash, beat the egg with a splash of water. When the buns are finished with the 2nd rise, gently brush each one with egg wash. At this point, you could add sesame or / nigella seeds to the top of your buns.

Preheat oven to 200°C /400° F. and place a skillet or metal baking dish on the oven floor. Before the dough goes in, add about 1/2 cup of water to the pan to create steam. This will help keep the bread nice and moist. Bake for about 15-20 minutes or until golden brown. Transfer to a wire rack to cool completely.
Enjoy!!!

✅Notes:
Giving your dough enough time to rise. Rise times will vary depending on temperature, so be patient. Remember to watch your dough and not the clock!