01 - Combine warm water and yeast in a large bowl. Let stand for 5 minutes until mixture becomes foamy.
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 soft dough forms. Turn onto floured surface and knead for 3–4 minutes until smooth and elastic.
04 - Place dough in lightly greased bowl, cover, and let rise in warm area for 1–1.5 hours until doubled in bulk.
05 - Punch down risen dough and roll to 1/2-inch thickness. Cut into strips 1/2 inch wide and 4 inches long using knife or pizza cutter.
06 - Pour vegetable oil into deep pot or fryer and heat to 350°F.
07 - Fry dough strips in batches, turning occasionally, for 2–3 minutes until golden brown and puffed. Avoid overcrowding the pot.
08 - Remove fries with slotted spoon and drain on paper towels. Generously dust with powdered sugar while still warm and serve immediately.