Take a proper amount of flour, add corn oil, yogurt and water, stir well, put the dough in the refrigerator for one night, take it out of the refrigerator the next day, cut it into uniform strips with a knife, rub it into long strips, rub it into twists, put oil in the pot, test the oil temperature with chopsticks, add the twists when bubbles appear, and fry it until golden brown, because the color does not need to be fried too deep.