Mix the milk with 350ml of warm water, the sugar and the yeast and stir. Leave for 5 minutes for the yeast to start to bubble.
In a mixing bowl, add both flours and work in the butter with your fingers until it has broken down into crumb sized pieces. I do this in my kitchen mixer bowl.
Add the salt and 1 egg to the flour and mix in.
Now mix in the frothing yeast mix. The dough should come together and be quite sticky. You may need to add more water depending on the flour. I've added quite a lot of extra water before. I use a mixer for this stage.
On a flat surface knead the dough. There is no need to flour or oil the surface, the dough will stick to start with but the more you knead the more it will come away. Use a dough scraper just to lift it off and back into the dough. Knead for at least 10 minutes, the dough should be very elastic and smooth.
Lightly oil the sides of your mixer bowl and drop the dough back in covering with cling film. Leave to prove at normal room temperature for about 1-2 hours until the dough has doubled in size.
Knock back the dough (basically squawk out the air). A quick knead again does this.
Form the dough into a round ball and cut into quarters. Then cut each of these quarters into thirds. You'll have 12 pieces of dough, hopefully all a similar size.
Form each of the 12 pieces of dough into a ball by tucking under the edges with your fingers. Place the formed balls of dough onto a silicon baking sheet on a baking tray with 2 inches between each ball.
Cover with a tea towel and leave to prove again. The dough needs to double in size. You'll find that some of the rolls join together, I think this makes them look great.
Once they've doubled in size, brush the rolls with an egg wash and sprinkle with sesame or poppy seeds, if you want to.
Either put the rolls into a preheated oven at 200°C for 15 minutes (13 minutes in a fan assisted oven) or onto your baking stone on the preheated Big Green Egg (220°C on the dome thermometer).
Once golden remove them and let them cool on a cooling rack.