01 - Combine warm water and yeast in a large bowl. Let stand for 5 minutes until mixture becomes foamy, indicating the yeast is active.
02 - Add sugar, melted butter, milk, egg, vanilla extract, and salt to the yeast mixture. Whisk until thoroughly combined.
03 - Gradually incorporate flour, stirring until a soft dough forms. Turn onto a floured surface and knead for 3–4 minutes until smooth and elastic.
04 - Place dough in a lightly greased bowl, cover with plastic wrap or a clean towel, and let rise in a warm area for 1–1.5 hours until doubled in volume.
05 - Punch down risen dough and roll out on a floured surface to 1/2-inch thickness. Cut into strips 1/2 inch wide and 4 inches long using a knife or pizza cutter.
06 - Pour vegetable oil into a deep pot or fryer and heat to 350°F. Use a kitchen thermometer to ensure proper temperature.
07 - Fry dough strips in batches, turning occasionally, for 2–3 minutes until golden brown and puffed. Avoid overcrowding to maintain oil temperature.
08 - Remove fries with a slotted spoon and drain on paper towels. While still warm, generously dust with powdered sugar and serve immediately.