For the dough, mix milk, water, salt, sugar and butter in a saucepan. Put it on the stove and bring to a boil. As soon as the oil dissolves and the liquid begins to boil slightly, pour in the flour and mix quickly. The dough will begin to form into a lump.
Dry the resulting dough over low heat for 3-4 minutes. It is important not to fry it, but only to dry it, constantly rubbing it. Remove from the stove and allow to cool slightly.