Preheat the oven with hot air at 180 degrees Celsius.
Pour the butter, water and salt in a casserole. Let it come to boiling point. Turn off the heat but keep the casserole on the warm stow.
Add the flour and mix well. Let it on the stow for 1 minute, then stir we'll and take away from the stow.
Let it rest 5 minutes and then add 1 egg at the time while stirring at the same time.
Add the grated cheese and mix well.
Place a baking paper on a baking sheet.
Make small balls of the dough and place on the paper.
Place in the middle of the oven for 25 minutes.
Turn off the oven, open the door and let the bread cool down a bit in the oven.