Shrove Tuesday is the last day before Lent which is considered the beginning of the build-up to Easter. Long time ago, people would go to church on this day and confess their sins for which they would be 'shriven' or forgiven. They would celebrate with a feast afterward. The following day is Ash Wednesday and it is when the period of Lent actually commences and serves to remind Christians of Jesus's 40 days without food spent alone in the desert. To commemorate the occasion, many Christians give up a favorite food for 40 days and give money to charity. Lent ends on Maundy Thursday, the day before Good Friday.
I actually, for the first time ever, tried a gluten-free recipe for my pancakes this year (all I'll say is that I'm on one of my diets yet again). They were brilliant and very easy to make. Click HERE for recipe.