1 packet dry yeast
1 cup water, divided
1 1/2 cups flour
4 cups vegetable oil, for deep frying
Confectioners' sugar, for dusting after frying
Dissolve the yeast in 1/2 cup lukewarm water. Put the remaining water in a large pan and add the flour all at once, beating vigorously. Beat in the yeast and quickly turn the dough out onto a marble slab or pastry board. Knead with greased hands until smooth. Put the dough into a bowl, cover with a cloth, and let rise in a warm place until doubled in size.
In a frying pan, heat 3 inches of oil and fry golf ball-size balls of the dough until golden brown. Remove from the pan and drain on paper towels. Sprinkle with confectioners' sugar.