Whether it's called Shrove Tuesday, Pancake Day or Mardi Gras, many countries choose to celebrate the last day before Lent by indulging in something sweet or fatty. In the UK and parts of the US, this usually means a big plate of pancakes in the morning. In Denmark there are special buns known as Fastelavnsbolle, Whether you celebrate it for religious reasons, or just because of a love of pancakes, it can be a real treat during these winter days.