1. In a small saucepan over a medium heat, combine the water, 2 ½ tablespoons of sugar, salt, and 2 tablespoons of vegetable oil. Bring to the boil and take off the heat. Stir in the flour mixture until a ball is formed.
2. Heat the oil in a deep-fryer or deep skillet to 375 degrees Fahrenheit (190 degrees Celsius). Pipe strips of dough into the hot oil using a pastry bag. Fry until golden and then drain on paper towels.
3. Combine ½ cup sugar and cinnamon, and roll the drained churros in the mixture.