Mix the flour, salt and sugar in the bowl of your robot.

Dilute the yeast in warm water and milk.

Add the liquid to the bowl with the egg and mix until a smooth dough is obtained.

Add the butter and knead for 15 minutes.

The dough should peel off the edges and especially peel off easily fingers. Add a little flour if it is not the case and finish kneading by hand.

Place in a bowl, cover with clingfilm and let stand for 1 hour. The dough must double in volume.

Degas by pushing your fist into the dough.

Form 8 balls of equal size.

Place them on a baking sheet lined with parchment paper and flatten them a little.

Let stand for 30 minutes.

Preheat the oven to 180 ° C.

Then mix the egg yolk with the 2 tablespoons of water.

Apply with a brush on the buns.

Sprinkle with poppy seed.

Bake for 20 minutes.