Churros are Spanish doughnuts which are fried until they become crunchy. They are long tube like shapes which can be straight, curled or twisted. They are traditionally served with super thick hot chocolate for dunking or sprinkled with sugar. The surface of a churro is ridged due to having been piped from a churrera, a syringe with a star-shaped nozzle.
In Spanish markets churros are often sold by street vendors, who fry them freshly and sell them hot covered in sugar. For 1 euro you get a huge bag full of greasy, hot, sugary doughnutty goodness. They always reminds me of the doughnut sellers on Brighton pier but half the price for twice as many!
Personally I only like churros hot as they are very chewy once they cool down. Eloise didn't seem to mind what temperature they were and scoffed most of our bag.