Gather all ingredients.
Mix together 1/2 of the flour, baking powder, and salt in a medium bowl. Set aside.
Beat together milk, eggs, and sugar in a large bowl. Add flour mixture and beat until smooth. Add remaining flour, using only enough to achieve a runny batter thin enough to flow through a funnel.
Heat 1 inch oil in an 8-inch skillet to 375 degrees F (190 degrees C). Put your finger over the bottom opening of a funnel and fill with a generous 1/2 cup batter. Release batter close to the surface of hot oil while making a circular motion and fry until the bottom is golden brown, 1 to 2 minutes.
Use tongs and a wide spatula to carefully turn cake over and fry until the other side is golden brown, about 1 minute more.
Drain cake on a paper towel-lined plate and sprinkle with confectioners' sugar. Repeat with remaining batter.
