Preheat oven to 220 degC, Gas 7
Heat milk, butter sugar and salt over medium heat. Once melted add flour and beat with a wooden spoon until dough comes away from the side of the pan.
Take off the heat and continue to beat to help cool down
Add the eggs one at a time and ensure each is incorporated before adding another. Not all of the eggs may be needed. Your need a thick paste consistency
Spoon the dough into a piping bag
Pipe onto parchment 1.5" rounds 1" high
With a wet finger, flatten each pastry peak
Sprinkle water on the tray to help create steam during the cooking process
Bake for 20 minutes until golden and risen. Switch off oven and allow the pastry to rest in the residual heat for 10 min
Remove and transfer to a wire rack to cool.
Using a straw or pencil, pierce each bun to allow the steam to escape.