Pour yeast and sugar over 1 cup of warm water in bowl. Stir to dissolve the yeast.
In a larger bowl, combine flour and salt. Pour the water and yeast mixture into the bowl with the flour. Stir to make a dough. Cover with plastic wrap and place in a warm area to rise for an hour and a half.
Using a deep fryer or dutch oven type of pot, warm 2 inches of vegetable oil. If you have a thermometer, heat the oil to 375 degrees. If you don't have a thermometer, you can test the oil by dropping in a small piece of the dough. It should sizzle and brown in a minute.
Scoop dough using a tablespoon and carefully drop into the oil.
Fry the zeppoles until they have turned a golden brown color. I used a slotted spoon to turn them during the cooking process for even browning. When you remove them from the oil, place the zeppoles on a plate lined with paper towels.
pour some powdered sugar into a bag and drop in a few zeppoles at a time. Shake vigorously until they are all coated and serve warm.