Heat the oven to 200 C. In a saucepan mix water, milk, sliced ​​butter and a pinch of salt and bring to the boil. Add the flour and stir with a wooden spoon until the formation of a homogeneous dough. Stir over low heat until dry and separate from the pot - about 2 minutes. Scrape the dough and put in a bowl and leave to cool for about 1 minute. To this was added the eggs one at a time, stirring vigorously after each. Add the feta cheese and a pinch of black pepper and nutmeg. The dough is placed in a syringe with a circular hole with a diameter of 1 cm and sprayed onto baking paper at a distance 5 cm from each other. Sprinkle with feta cheese and bake in about 20-25 minutes or until puffed and gain golden brown. Serve hot. May come back in the freezer or refrigerator, and before serving to warm until they mumbo oven heated to 180 ° C